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Front parking camera mod

Mod device you need to understand all the risks.
Neither I or the website is responsible for your actions and possibly killed devices!
After take a loock of schematics I found how to add the front parking camera.
Here you can find schematics: schematic
The video input is in the video switch FMS6502 IN2 (pin3) :
Screenshot_2017-08-27-17-17-07 by Hugo, en Flickr
We have to connect the camera signal to pin 3 on FMS6502 in series with 0.1uf ceramic capacitor and 75 ohms resistor to ground. (see schematics for reference)
IMG_20170821_202803 by Hugo, en Flickr
Now we need 12v for power up the camera, the MCU pin 91 it's the control for this, but can't connect direct to 12v of the camera, we need a power mosfet.
Here the schematics of MCU:
Screenshot_2017-08-27-17-15-46 by Hugo, en Flickr
Solder the cable to pin 91 (be carefully pins on MCU are tiny you can easily short two or more pins)
IMG_20170823_193110 by Hugo, en Flickr
Now here schematics and board for connect camera and 12v control:
Screenshot_2017-08-27-18-31-52 by Hugo, en Flickr
Screenshot_2017-08-27-18-30-56 by Hugo, en Flickr
20170827_174140 by Hugo, en Flickr
The lines are from the camera I already buy a cemara without lines but I'm still wating for arrive.
I made the control with LMUN2211LT1G and AO3407 because I already have this transistors but there is many option.
I include eagle files for board.

hugovw1976 said:
Mod device you need to understand all the risks.
Neither I or the website is responsible for your actions and possibly killed devices!
After take a loock of schematics I found how to add the front parking camera.
Here you can find schematics: schematic
The video input is in the video switch FMS6502 IN2 (pin3) :
Video SW by Hugo, en Flickr
We have to connect the camera signal to pin 3 on FMS6502 in series with 0.1uf ceramic capacitor and 75 ohms resistor to ground. (see schematics for reference)
VideoSW_2 by Hugo, en Flickr
Now we need 12v for power up the camera, the MCU pin 91 it's the control for this, but can't connect direct to 12v of the camera, we need a power mosfet.
Here the schematics of MCU:
MCU by Hugo, en Flickr
Solder the cable to pin 91 (be carefully pins on MCU are tiny you can easily short two or more pins)
MCU_2 by Hugo, en Flickr
Now here schematics and board for connect camera and 12v control:
Screenshot_2017-08-28-08-23-00.png by Hugo, en Flickr
Screenshot_2017-08-28-08-23-10.png by Hugo, en Flickr
20170827_174140 by Hugo, en Flickr
The lines are from the camera I already buy a cemara without lines but I'm still wating for arrive.
I made the control with LMUN2211LT1G and AO3407 because I already have this transistors but there is many option.
I include eagle files for board.
Click to expand...
Click to collapse
WOW !!!
This thing is awesome !!! It is very much that I was trying to figure out how to connect a front cam.
Thanks for this information !!!
But I'm not very experienced in these things.
I did a diagram of how I understood the connection to be made from pin 3, is it correct ???
I have to connect a wire from pin 3 to a 0.1uf ceramic capacitor and then connect the 0.1uf ceramic capacitor through a split to one 75 ohms resistor going to ground and on the other to a rca connector
Did I get it right??
Thanks for the support

apollo1976 said:
WOW !!!
This thing is awesome !!! It is very much that I was trying to figure out how to connect a front cam.
Thanks for this information !!!
But I'm not very experienced in these things.
I did a diagram of how I understood the connection to be made from pin 3, is it correct ???
I have to connect a wire from pin 3 to a 0.1uf ceramic capacitor and then connect the 0.1uf ceramic capacitor through a split to one 75 ohms resistor going to ground and on the other to a rca connector
Did I get it right??
Thanks for the support
Click to expand...
Click to collapse
It's correct.

hugovw1976 said:
It's correct.
Click to expand...
Click to collapse
Thank you!!!
Tomorrow I buy everything and try it right away !!
You've been really brilliant, this thing is very useful !!

apollo1976 said:
Thank you!!!
Tomorrow I buy everything and try it right away !!
You've been really brilliant, this thing is very useful !!
Click to expand...
Click to collapse
Just remember you have to enable front camera in settings, and you can't power up the front camera with the same cable of the rear camera because is power down when unit change to front camera.

That’s very cool. I have two questions though:
1. How can we switch on the camera automatically? As long as I see you use it through the app.
2. Can this be applied to a MTCD KGL unit?
Sent from my iPhone using Tapatalk

techo91 said:
That’s very cool. I have two questions though:
1. How can we switch on the camera automatically? As long as I see you use it through the app.
2. Can this be applied to a MTCD KGL unit?
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
1. The MCU pin 91, it's 3.3v when front camera is switch on, just have to add a PNP transistor to 12v to control the cam. Check the last pic the left part is the diagram of transistors switch to power up the camera, the right side is the connection of camera to video switch chip.
MCU by Hugo, en Flickr
Solder the cable to pin 91 (be carefully pins on MCU are tiny you can easily short two or more pins)
MCU_2 by Hugo, en Flickr
Screenshot_2017-08-28-08-23-00.png by Hugo, en Flickr
2. Only have a GS unit to test this. but I bealive almost all units have same components just check if your board have the video switch chip FMS6502 and check if pin 91 on MCU 3.3v when front camera app is on.

My GS Device has three camera inputs, but the front cam app does not work on any of them. Is there no possibility to change/mod the app? To take another existing channel instead of modding the hardware?

Xamadeu said:
My GS Device has three camera inputs, but the front cam app does not work on any of them. Is there no possibility to change/mod the app? To take another existing channel instead of modding the hardware?
Click to expand...
Click to collapse
Posible yes, but you must have to mod app and MCU software (MCU controll the video switch chip), I'm not a expert but I bealive mod app it's no very hard but for mod MCU software it's necesary to have MCU source code (not the compiled program that all vendors send to upgrade MCU) and I don't know if some ona have it. (and you must mod this with every MCU upgrade).

hugovw1976 said:
Mod device you need to understand all the risks.
Neither I or the website is responsible for your actions and possibly killed devices!
After take a loock of schematics I found how to add the front parking camera.
Here you can find schematics: schematic
The video input is in the video switch FMS6502 IN2 (pin3) :
Video SW by Hugo, en Flickr
We have to connect the camera signal to pin 3 on FMS6502 in series with 0.1uf ceramic capacitor and 75 ohms resistor to ground. (see schematics for reference)
VideoSW_2 by Hugo, en Flickr
Now we need 12v for power up the camera, the MCU pin 91 it's the control for this, but can't connect direct to 12v of the camera, we need a power mosfet.
Here the schematics of MCU:
MCU by Hugo, en Flickr
Solder the cable to pin 91 (be carefully pins on MCU are tiny you can easily short two or more pins)
MCU_2 by Hugo, en Flickr
Now here schematics and board for connect camera and 12v control:
Screenshot_2017-08-28-08-23-00.png by Hugo, en Flickr
Screenshot_2017-08-28-08-23-10.png by Hugo, en Flickr
20170827_174140 by Hugo, en Flickr
The lines are from the camera I already buy a cemara without lines but I'm still wating for arrive.
I made the control with LMUN2211LT1G and AO3407 because I already have this transistors but there is many option.
I include eagle files for board.
Click to expand...
Click to collapse
In which directory eagle files for board.
Thank you

Hi, I would like to run my front cam from Fcam but I can not make the change. Alternatively I have attached the RCA AV wires but when I open the "Avin" application does not open at the first shot. I have to force the opening several times to view the images. Is there a solution? Another question: Can you modify the Fcam application for those who can not change the hardware? Which archive Fcam.rar is in which path to insert?

xirix22 said:
In which directory eagle files for board.
Thank you
Click to expand...
Click to collapse
At the end of first post is the fcam.rar file

bettuccio said:
Hi, I would like to run my front cam from Fcam but I can not make the change. Alternatively I have attached the RCA AV wires but when I open the "Avin" application does not open at the first shot. I have to force the opening several times to view the images. Is there a solution? Another question: Can you modify the Fcam application for those who can not change the hardware? Which archive Fcam.rar is in which path to insert?
Click to expand...
Click to collapse
Unfortunately is not only to modify app you must need to modify MCU file and without the source code of MCU file I believe it's almost impossible, and I never see some one to share the source code of MCU file all I have is the compiled file.

hugovw1976 said:
Unfortunately is not only to modify app you must need to modify MCU file and without the source code of MCU file I believe it's almost impossible, and I never see some one to share the source code of MCU file all I have is the compiled file.
Click to expand...
Click to collapse
I understand the impossibility. Why does apk Avin not open at the first shot? It's a software problem or current link because I've only done a test by leaning black and red threads without isolating them well. I wonder why the manufacturers have inserted Fcam if they knew it would not work! However, I would like to know the same way in which your "Fcam.rar" wires should be inserted. In the future I could use it if I cut my car radio. Now I'm only connected to an "AV in" extension in the dashboard and I take 12 volt power from a dismounted Dvbt receiver. From what I understand Fcam would not work that way. in addition to the modification You must connect behind the car radio to another source. Is that so?

bettuccio said:
I understand the impossibility. Why does apk Avin not open at the first shot?
Click to expand...
Click to collapse
This shoud be a software trouble.
bettuccio said:
In addition to the modification You must connect behind the car radio to another source. Is that so?
Click to expand...
Click to collapse
Just conect the camera to AV cable and the 12v output from the board (in the Fcam.zip) to power up the camera just when the Fcam app is open.

hugovw1976 said:
This shoud be a software trouble.
Just conect the camera to AV cable and the 12v output from the board (in the Fcam.zip) to power up the camera just when the Fcam app is open.
Click to expand...
Click to collapse
sorry I did not understand where the files in the "Fcam.rar" folder should be inserted. Can you please tell me? Thank you

bettuccio said:
sorry I did not understand where the files in the "Fcam.rar" folder should be inserted. Can you please tell me? Thank you
Click to expand...
Click to collapse
FCA.rar are files in eagle for schematic and board if you want to made board for easy connection but also you can solder components direct to wires.
For video input you just need 75 ohms resistor and 1uf capacitor.
And for power up camera (12v) you just need a NPN and PNP transistors with a couple of resistors. Check schematic on pictures of first post.

hugovw1976 said:
FCA.rar are files in eagle for schematic and board if you want to made board for easy connection but also you can solder components direct to wires.
For video input you just need 75 ohms resistor and 1uf capacitor.
And for power up camera (12v) you just need a NPN and PNP transistors with a couple of resistors. Check schematic on pictures of first post.
Click to expand...
Click to collapse
ah ok, now it's clear. I thought they were files to add to FCam apk. Thanks friend . ?

:dita incrociate:
hugovw1976 said:
This shoud be a software trouble.
Just conect the camera to AV cable and the 12v output from the board (in the Fcam.zip) to power up the camera just when the Fcam app is open.
Click to expand...
Click to collapse
hello, sorry for my insistence, in the end I opted for the Avin RCA entrance. Now I've resolved with Avin apk and it opens at the first shot. Now With a special application let me just unblock the Avin application that opens the front image for a few seconds
after the reverse . Now , however, I would like to know one thing: By doing various tests, I noticed that the wires that are connected to the 12 volt power of the car radio after a while are overheated. I would like to know if the current always circulates in the camera even when I close Apk Avin. I'm thinking this is why the threads are overheated. I'm afraid can burn. To avoid this problem from where do I have to take exactly 12 volt power?

bettuccio said:
:dita incrociate:
hello, sorry for my insistence, in the end I opted for the Avin RCA entrance. Now I've resolved with Avin apk and it opens at the first shot. Now With a special application let me just unblock the Avin application that opens the front image for a few seconds
after the reverse . Now , however, I would like to know one thing: By doing various tests, I noticed that the wires that are connected to the 12 volt power of the car radio after a while are overheated. I would like to know if the current always circulates in the camera even when I close Apk Avin. I'm thinking this is why the threads are overheated. I'm afraid can burn. To avoid this problem from where do I have to take exactly 12 volt power?
Click to expand...
Click to collapse
Yes the camera always drawing power that's the main reason for hardware mod. When you open the front camera app the MCU power up the circuit on the board I made to power up the camera only when front camera app is open.

Reversing camera connection issues

Hello,
I've got MTCE unit (PX3) that I'm trying to install into Toyota truck. I've had another unit in previously and it had a reversing camera that was activated when the reverse was engaged by a dedicated wire in a harness. I've connected my camera to Video-In connector (H-5 on the attached harness). I can see video fine if I run AVID application, so this is working. What is not working is automatic engagement when I put the car in the reverse.
I can't seems to find a dedicated reverse signal. I understand that it may detect reverse through CanBus and I've connected included CanBus decoder to the unit, however it still doesn't work.
Am I missing something and what would the recommended troubleshooting suggestions?

Hi,
You are doing it wrong. You should not connect the video signal to Video IN of the unit. This way - the picture will show only when you launch the AVIN application. You should connect it to the CAMERA or REVERSE labeled plug. What is the G plug for ? Is it for a reverse camera or Car DVR ?
You can power up the camera (+12V and GND) from the white reverse light.

Thanks for the reply, however I can't sadly see any REVERSE or CAMERA labeled connectors on my unit. Plug G has microphone cable and that is it (see attached). Plug H has also a connector labeled DR-V and main connector has something labeled CCD-IN. I've tried plugging my camera to these connectors and sadly none of them seems to show camera feed when the reverse is engaged. Any other ideas on how I can get camera to work?

SuperPuper2K said:
Thanks for the reply, however I can't sadly see any REVERSE or CAMERA labeled connectors on my unit. Plug G has microphone cable and that is it (see attached). Plug H has also a connector labeled DR-V and main connector has something labeled CCD-IN. I've tried plugging my camera to these connectors and sadly none of them seems to show camera feed when the reverse is engaged. Any other ideas on how I can get camera to work?
Click to expand...
Click to collapse
When you bought it, was it advertised as having this capability? If so, I'd try to get a refund. Mine (and most others that I've seen) that have reverse functionality have a dedicated video in line that's labeled as such.

See K 5 and 6.

Hazard15301 said:
When you bought it, was it advertised as having this capability? If so, I'd try to get a refund. Mine (and most others that I've seen) that have reverse functionality have a dedicated video in line that's labeled as such.
Click to expand...
Click to collapse
Yes, the unit has reversing camera as an option and sadly the seller is less then helpful in resolving this issue. Having looked on the forums I can see that even when the camera is not connected the head unit should switch to black screen when reverse is engaged. In my case it doesn't do that. Does it mean that something is not working with CAN bus decoder? I've looked through factory settings and tried all options available for my car manufacturer and sadly they didn't make any difference.
Is there a way to test CAN bus decoder to see if it is working at all or not?

I have a reversing camera problem albeit a different one, that's been worse today. Sometimes after I finish reversing the camera image stays on the screen, frozen. I don't know if something's wrong with the reverse detection input or the camera video signal. I've had this with other units of the same model (KSP) or at least they were also MTCD PX5. My thought is to play with the resistances to the MCU. For now if I reboot it's back to normal.

SuperPuper2K said:
Am I missing something and what would the recommended troubleshooting suggestions?
Click to expand...
Click to collapse
Your reverse camera should go to the main power connector 5th pin(CAM-IN) and reverse trigger line should go to 6th pin(CAM-LINE).
Ideally your main power connector should have yellow video in connector which connects ground and 5th pin.

smnrock said:
Your reverse camera should go to the main power connector 5th pin(CAM-IN) and reverse trigger line should go to 6th pin(CAM-LINE).
Ideally your main power connector should have yellow video in connector which connects ground and 5th pin.
Click to expand...
Click to collapse
You've just made my day. This was exactly the solution to my issue. The wires were connected to some strange connector, however after I've rewired it to my camera everything started working just fine.
Thanks a lot for your help.

hello
I have exact same issue, with wireless camera connector , have yellow connector to ccd in and nothing changes maybe somebody could draw scheme how to connect to head unit , have same connector.

Question NaviFly 7862 steering wheel controls not working

Hi
I have purchased an Android HeadUnit for my Renault Megane 2 (2007) from AliExpress. Every function works except the steering wheel controls. The unit has the UIS7862 CPU @1.8Ghz, 6gb Ram and 128gb storage. I have installed the CanBox correctly and tried many CanBox settings in factory menu, but I cannot get the control app to enter learning mode. Does anyone have any idea? Maybe the built in key map application is at fault (com.syu.steer).

Did you find a solution to your problem yet?
I'm stuck at the exact same scenario, same unit. The support over at AliExpress mention to me to select "XP" for canbox settings. However, my canbus module is by Raise, hence I should be using the "RZC"
Also, my reverse cam doesnt work too.
Pls share your findings. Thank you!

I got the steering wheel keys to work with a custom controller made by an engineer in my country specifically for my car and my HeadUnit. The controller is connected directly to the wheel controls and the "key" wire on my HeadUnit. I had to disassembly the steering wheel base and route the cable around the original one. Now I can map every key to an action in the Key Learning app. For the backup camera, because I used a wireless kit, I couldn't use the "back" camera wire to trigger the HeadUnit to switch to it. The kit came with a receiver which only had power wires and a yellow RCA cable. I wired the receiver's power cables to the ACC power so that the receiver only powers on when the engine is running and I managed to map a button on the steering wheel to switch to the RCA input. Now when I want to use back up camera, I just need to press a button to see the image. The camera's transmitter is wired to the license plate bulb and I managed to fit it in the rear bumper.
This wasn't a "plug and play" experience that the Chinese seller promised, but overall I can say I am pretty happy with the end result. The audio quality is wayyy better than the stock HeadUnit. I didn't know that my stock speakers could get that loud and have so much bass. The DSP chip does it's job wonderfully. Also the radio reception is better than with the stock unit. The Android HeadUnit is fast and snappy. Apps open almost instantly and those 6gb of ram really help. I could compare the overall user experience with my OnePlus 7 phone. The unit also cold boots very quickly. The wifi reception is pretty poor. The unit shows 75% signal when my phone is in the car. It doesn't bother me because I put a Sim card in the unit and the mobile reception is as good as on my phone.

andrei-2200 said:
I got the steering wheel keys to work with a custom controller made by an engineer in my country specifically for my car and my HeadUnit. The controller is connected directly to the wheel controls and the "key" wire on my HeadUnit. I had to disassembly the steering wheel base and route the cable around the original one. Now I can map every key to an action in the Key Learning app. For the backup camera, because I used a wireless kit, I couldn't use the "back" camera wire to trigger the HeadUnit to switch to it. The kit came with a receiver which only had power wires and a yellow RCA cable. I wired the receiver's power cables to the ACC power so that the receiver only powers on when the engine is running and I managed to map a button on the steering wheel to switch to the RCA input. Now when I want to use back up camera, I just need to press a button to see the image. The camera's transmitter is wired to the license plate bulb and I managed to fit it in the rear bumper.
This wasn't a "plug and play" experience that the Chinese seller promised, but overall I can say I am pretty happy with the end result. The audio quality is wayyy better than the stock HeadUnit. I didn't know that my stock speakers could get that loud and have so much bass. The DSP chip does it's job wonderfully. Also the radio reception is better than with the stock unit. The Android HeadUnit is fast and snappy. Apps open almost instantly and those 6gb of ram really help. I could compare the overall user experience with my OnePlus 7 phone. The unit also cold boots very quickly. The wifi reception is pretty poor. The unit shows 75% signal when my phone is in the car. It doesn't bother me because I put a Sim card in the unit and the mobile reception is as good as on my phone.
Click to expand...
Click to collapse
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!

MasK said:
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!
Click to expand...
Click to collapse
You connected the reverse wire?
Maybe this triggers the camera view of it doesn't work via the canbus.

Well, it does work via canbus, just doesnt switch to cam input automatically. Perhaps its some software settings.

MasK said:
Well, it does work via canbus, just doesnt switch to cam input automatically. Perhaps its some software settings.
Click to expand...
Click to collapse
Not all canbus provide the reverse signal. So maybe you have to provide the reverse signal on the separate input.

TorstenH said:
Not all canbus provide the reverse signal. So maybe you have to provide the reverse signal on the separate input.
Click to expand...
Click to collapse
I feel that the HU knows when I am referring (CANBUS might be working here), because the 12V turns on when Im in reverse. The only issue is the HU doesnt switch to the cam automatically. Looks to me like a SW issue. Still awaiting reply from manufacturer.
Also, I realised my backward/forward buttons are swapped. Why is it I can't re-learn them?

It may not be the same for the Navifly, but on my unit, G5 must get the proper voltage to "detect" the car has been put in reverse. I'm re-using my factory rear view camera and it's a 6.5V camera. However, I had to up the voltage to 8.6V so that G5 go that voltage...then the rear image showed up. I reused the car wiring and that's why I had to do this.
Check the voltage that G5 is getting. With a canbus module, I believe there is a wire from the canbus going to G5. If no voltage, make sure the pins are in properly.
FYI, if you are using a canbus and the steering wheel controls go through the canbus, then I believe that you cannot remap the keys.

The 12 V from the reverse wire are coming from your car (or in some cases from the canbox if the information gets transmitted from car to the box via canbus).
My suggestion is:
There is a separate reverse connection (usually a brown wire) on the head unit which triggers the radio to open the app which shows the image of the reverse cam.
You could even connect ACC or B+ to the reverse connection for testing purposes.

mastrv said:
It may not be the same for the Navifly, but on my unit, G5 must get the proper voltage to "detect" the car has been put in reverse. I'm re-using my factory rear view camera and it's a 6.5V camera. However, I had to up the voltage to 8.6V so that G5 go that voltage...then the rear image showed up. I reused the car wiring and that's why I had to do this.
Check the voltage that G5 is getting. With a canbus module, I believe there is a wire from the canbus going to G5. If no voltage, make sure the pins are in properly.
FYI, if you are using a canbus and the steering wheel controls go through the canbus, then I believe that you cannot remap the keys.
Click to expand...
Click to collapse
Absolutely correct.

Thanks guys, but there is no other brown wire for this.
I have a discussion abt this on this thread too:
Medeke/Navifly 7862
Hi, Recently received above unit for my 2006 RS4. everything is great (much better then the M400 I had before) apart from the radio. It seemed to work for the first 2 days, then worked intermittently and now not at all. I have tried...
forum.xda-developers.com
My "cam12V" wire is from the HU and it turns on when I am in reverse. Does this mean that this signal might be coming from my canbus? If so, is there another input back to the HU to trigger the screen to display the video feed? Only other wires I see are AMP related

Give 12V to pin 2 and check if the app to display the image of the cam will start:

TorstenH said:
Give 12V to pin 2 and check if the app to display the image of the cam will start:
View attachment 5374441
Click to expand...
Click to collapse
Yes! It took me a while to figure this out.. mainly because I'll have to cut the wire (wasn't very confident in that)
and also.. the wires at Pin2 didn't make sense! They were more like Battery12V. I did cut and tested that.
So.. it turns out its a pink wire at pin3!
I realized this as I looked at my old Dasaita wires from the canbus connector. Since canbus is a standard, they should be comparable. That reverse wire went into Pin3.
I'm really surprised that Mekede and Navifly has this pin layout printed in all their listings.. but it's just wrong.
Thanks alot for the help!

That means it works now? I think you had to cut the ACC wire according to the manual because the "ignition on" information is provided by the can box.

TorstenH said:
That means it works now? I think you had to cut the ACC wire according to the manual because the "ignition on" information is provided by the can box.
Click to expand...
Click to collapse
Yes it works now. Check out the images. The Pin2 (red) is probably ACC or batt 12V as there was no power when cut. I then cut the wire opposite it (pin10) in case I was looking at the connector wrongly. That turned out to be the headlight sensor.
After tracing the wire and comparing to my old Daisata, it turns out Pin3 (pink) is the reverse IN.

Excellent. Thanks for the clarification.
That means it makes sense to get the wiring diagram from the old radio of the car and compare it with the description of the new head unit.
In my case I had to completely rewire the harness (just if someone is interested):
Junsun V1 MTK8259 - the adapter battle (Kia Ceed Jd) / OEM camera usage / reference thread
I bought the Junsun V1 head unit but my Kia Ceed JD had a OEM nav unit which isn't directly compatible to Junsun V1. So I re-wired the wiring harness based on the pins description of my original OEM navigation unit. I'm only modifying the wiring...
forum.xda-developers.com

The only thing that I could compare to (between old and new HUs) is the canbus connectors. Rest cannot be compared as they're all different.
Oh well..
Anyways, the current Mekede I have has Radio chip NX6686. My old Dasaita PX5 also has a NX6686. However, the radio reception is absolutely trash in the new one. I dont listen to radio that often (I can resort to streaming radio) but my dad takes the car occasionally and he's already complained about it
Your experience on the harness rewiring is pretty intense!
Update: Turns out my Antenna connector was a tad loose and I had to do a re-connect. The radio reception is all good now

MasK said:
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!
Click to expand...
Click to collapse
So you found correct canbus settings and connections .. i cant find anything about you sharing them

Question Android app for rear camera with parking lines

Hey guys,
Ive got an Joying JY-UQ135N4G headunit with android 10.
As I have no signal cable for the reverse gear detection, I connected my rear camera to AV IN. When connecting the camera to AV IN there is luckily no need to connect the orange signal cable for reverse gear detection.
Unfortunately the screen does not show any parking lines when using the default "aux" app. (The rear camera app can't be used as the camera is connected to AV IN)
Is there any alternative app that I can use to get the parking lines?
Many thanks & Best regards!

You're doing it wrong.

marchnz said:
You're doing it wrong.
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? Did you read the whole post?

pwn1ca said:
? Did you read the whole post?
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try to look in Dev settings of your unit. Default password is four eights usually.

olesolo said:
try to look in Dev settings of your unit. Default password is four eights usually.
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that not help him becouse with those setings u can add or remowe lines for rear camera input not for av in,solution for him is what he ask about some app who have that line layer in video or he need to do properly wired conection from reverse-light + signal to hernes wire (usualy orange named Back) and change the camera input to hernes where is rear cam video input,if is to complicated for him to conect that wire trough car he can do some hardwire with relay conected to car brake wire and plus 12v trough relay contacts to "BACK" wire on the unit or if he satisfied with tha manual way entering the cam he can use just normal switch from 12v to back wire but in all keyses he need to change video input to rear cam video input

Question Teyes CC3 How do I delete reverse camera APK?

Does anyone know where to find the reverse camera apk? My car comes with a display that shows the reverse camera. So I don't want it to show up on my Teyes headunit at all. It's done through CANBUS, so I can't just disconnect anything. So any time I go into reverse, the screen just goes blank. Pretty sure deleting the apk is my only choice, but I can't seem to find it. Any advice?

late response, but if the camera is activated by canbus then you must have a canbus box. One of the cables coming from this box (usually brown) is the reverse detection cable that connects to the G5 port of the device. Cut this cable and normally it should stop the camera from showing I guess

Hey breadstuffing
Did you get this fixed?

mjcummins said:
Hey breadstuffing
Did you get this fixed?
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The post above yours which suggests cutting the 'reverse trigger' brown wire from the canbox to headunit, could that work in your situation

Hey guys i need help! So i made a copy of my camera.apk. I tried to remove the camera shutter sound by extracting the apk file