Junsun V1 MTK8259 - the adapter battle (Kia Ceed Jd) / OEM camera usage / reference thread

[TorstenH]

I just want to bring this thread on top because I think it's something like a reference - even if you drive another car.

 

[tiestolord]

Now I added the adapter for the rear view camera.
View attachment 5234689
No need to say that I had to re-wire this adapter, too. But I got it for 4 EUR without the need to buy the 24 pin connector, the step-down converter and a head shrink to protect the converter.
Most OEM cameras are running on 6V.
The car (Kia Ceed JD) has a separate connector which provides on two pins the video signal and has another two pins for the camera power input. Usually the OEM Nav unit provides the 6V but the adapter is doing this job, now.

Pin description for LAN2050EKJD:
View attachment 5238555
Relevant pins are only:
Pin 12 is the video image being sent to the head unit, pin 24 is the ground wire for the video. Connect cinch plug with pin 12 (inner wire) and pin 24 (shield).
Pin 10 is the positive power for the cam, pin 22 is the ground for the cam power supply.
Connect Step-Down converter 5v output! with pin 10 (+) and pin 22 (-).


I was worried if REVERSE is able to provide enough power for a stable operation of the camera. If not the solution would be to use an electronical relay, get the power from B+ and just use REVERSE as signal. An elecronical relay because a normal relay makes a click sound I don't want to hear as soon as I enter the reverse gear.

But currently it works like a charm. And I'm positive surprised because the Junsun V1 switch to back camers display before boot is completed.

Mate I need help with this, I have ceed JD GT OEM camera and teyes spro radio. I bought same cam kit Adapter and when I connect direct to 12V camera works but I have to manually start app.
When I connect to reverse/back wire nothing happens.

Do I really need Step-Down converter 5v output?

 

[TorstenH]

Mate I need help with this, I have ceed JD GT OEM camera and teyes spro radio. I bought same cam kit Adapter and when I connect direct to 12V camera works but I have to manually start app.
When I connect to reverse/back wire nothing happens.

Do I really need Step-Down converter 5v output?

I suggest to use a converter to 6V because 12V may kill your OEM camera after a while. And the original Kia cam is expensive.

Your head unit needs 12V+ on the reverse input to get a trigger to switch to the camera app automatically. Kia has a reverse wire which has to be connected directly to reverse input of the headunit.

 

[tiestolord]

I suggest to use a converter to 6V because 12V may kill your OEM camera after a while. And the original Kia cam is expensive.

Your head unit needs 12V+ on the reverse input to get a trigger to switch to the camera app automatically. Kia has a reverse wire which has to be connected directly to reverse input of the headunit.

I have this CAM-KI1-RT , and converts 12 v to 6 v. But still. When I connect converter with back wire from headunit and I put in reverse gear. Nothing happens...

 

[tiestolord]

I suggest to use a converter to 6V because 12V may kill your OEM camera after a while. And the original Kia cam is expensive.

Your head unit needs 12V+ on the reverse input to get a trigger to switch to the camera app automatically. Kia has a reverse wire which has to be connected directly to reverse input of the headunit.

Sry I read now this part, so that meand there is extra wire for that. Which one is it?

 

[TorstenH]

Sry I read now this part, so that meand there is extra wire for that. Which one is it?

B7 provides +12V as soon as you switch to reverse gear:



Connect B7 with the reverse input of your head unit. Usually the wiring harness of you head unit has a loose cable labeled with reverse. This should already enable your head unit to switch to the camera app automatically.

 

[tiestolord]

This is blue wire grom OEM connector is B7 for reverse.
In my harness is missing pin for B7. Okey I gonna try connect reverse wire with B7 wire.

 

[tiestolord]

Mate you are my saviour. It works flawlessly.
Thank you mate, I driver my car almost 1 year without reverse camera.

 

[TorstenH]

Mate you are my saviour. It works flawlessly.
Thank you mate, I driver my car almost 1 year without reverse camera.

The Chinese don't connect reverse with their harness because they expect that you will use a aftermarket camera and getting reverse signal from reverse light.

I'm also using the +12V from B7 to power the step down converter for power supply of the camera. This avoids that the camera and the step-down converter are always on, with a positive affect for components lifetime.

 

[tiestolord]

The Chinese don't connect reverse with their harness because they expect that you will use a aftermarket camera and getting reverse signal from reverse light.

I'm also using the +12V from B7 to power the step down converter for power supply of the camera. This avoids that the camera and the step-down converter are always on, with a positive affect for components lifetime.

True, i didn't think that way. Thx for link in pm, my works too. I hope someone find this help useful too.

 

[TorstenH]

Because I connected the external mic of my car to the head unit I decided to disconnect the internal microphone. This improves sound quality dramatically.

The board can be accessed without screws by removing a service cover:


Desoldering the black and red wires is piece of cake. But please don't try with those weird solder guns from the hardware store and don't forget to add some new solder on the tip, to improve heat conduction and so shorten the time you're heating up the circuit board.
I isolated the wires with some tape and put them into the space on the right side of the board (red arrow). Sure, you could also remove the mic completely...



Sound quality before and after that modification can be tested with any sound recorder app.

 

[freeindeed59]

Looking to see if anyone has issue with radio and solutions. I updated to firmware v44 for my Junsun V1 Pro now the radio wont hold a station for very long and keeps searching, even when saved. Any suggestions please?
Also is there a way to get DAB radio without a new antenna?

 

[TorstenH]

Looking to see if anyone has issue with radio and solutions. I updated to firmware v44 for my Junsun V1 Pro now the radio wont hold a station for very long and keeps searching, even when saved. Any suggestions please?
Also is there a way to get DAB radio without a new antenna?

This is not the right threat for your first question.

There are three options to receive DAB:
- replacement of the existing antenna (best solution)
- window antenna which often gets shipped with the DAB USB dongles (Google for it or watch YouTube to get an idea how to install).
- splitter which allows to use the existing antenna for DAB. This approach didn't worked for me. You could give it a try and return the splitter if it doesn't work.

In all cases you need a DAB dongle as you can see here:
https://forum.xda-developers.com/t/...-usage-reference-thread.4236281/post-84574977

And you need an additional app. DAB-Z is the preferred one.

 

[peroporfarvo]

I do not have a soldering iron nor have I ever used one, if I cut a cable from the microphone would be enough, if it is cut it can simply be harmful to the equipment

 

[quangtiens]

Because I connected the external mic of my car to the head unit I decided to disconnect the internal microphone. This improves sound quality dramatically.

The board can be accessed without screws by removing a service cover:
View attachment 5805733

Desoldering the black and red wires is piece of cake. But please don't try with those weird solder guns from the hardware store and don't forget to add some new solder on the tip, to improve heat conduction and so shorten the time you're heating up the circuit board.
I isolated the wires with some tape and put them into the space on the right side of the board (red arrow). Sure, you could also remove the mic completely...

View attachment 5805735

Sound quality before and after that modification can be tested with any sound recorder app.

I have connected external Mic, the sound is much more better but still noise, I will try to cut off the internal mic as your guidance.

 

[schumifer]

@TorstenH

Wow what a thread! I am about to engage in the endeavor of installing an aftermarket multimedia system to my KIA ceed 2016. I guess I will be following your guide to the letter.

What worries me though Is that some sellers do no suggest their products for cars with already installed navigation system, but only for those with traditional radio-cd.

Is that because of the back camera or something else?

Thanks in advance

 

[TorstenH]

@TorstenH

Wow what a thread! I am about to engage in the endeavor of installing an aftermarket multimedia system to my KIA ceed 2016. I guess I will be following your guide to the letter.

What worries me though Is that some sellers do no suggest their products for cars with already installed navigation system, but only for those with traditional radio-cd.

That's exactly what I'm mentioning in the 1st post. I bought a unit which only gets offered to be not compatible with a Kia Ceed with already installed navigation system.
The wiring is different so you have to repin the wiring harness which comes with the radio.

Is that because of the back camera or something else?

The OEM back camera is not supported and almost no head unit supports OEM cameras. I tried to describe what I've done to continue to use it. I didn't want to install an aftermarket camera.

Thanks in advance

You're welcome. I created this thread to share my experiences so you can install a head unit which is known here on XDA. Buying a unit which is not known here would be a big mistake in case of questions or if you want to update the firmware.