Connecting Chinese 7018B Radio to Volkswagen Golf 5 Using ISO Cube Adapter

Hello,
I bought a Chinese 7018B radio.
I bought an adapter from the original ISO cube to the new radio, I don't know which wire is for what (original ISO cube). I am also uploading the scheme of the old radio and the scheme of the new one. How to connect new ones?



Added after 1 [minutes]:

I know that one cube is for speakers, i.e. the brighter one, but I do not know which wire is used for what from this black cube, I do not want to spoil the radio

Take an ordinary meter, find the mass in the cube and 3 plus 12V. One +12V is constant, the second and third when the ignition is turned on. Regards

That's all I know. The only question is which one is from the battery, which is from the ignition and which is from the memory, etc

Added after 2 [minutes]:

There are 6 wires in this cube and I want to know which one is for what.

Your original radio is controlled from the CAN bus, so in my opinion the connection should look more or less like I drew, but I don't know if it will work. You have an optionally connected car alarm with the original radio and here I am not sure if the alarm will work for you after replacing it, so this Chinese radio is probably not dedicated to your car. Of course, you can try to combine it for a short time and check it yourself, but what will come out of it, you will check it yourself and let me know if this solution will suit you. If not, look for a radio dedicated to your car model. But from what I see you have a basic sound system, i.e. a simple stereo.

I have already done. But thank you. I did so. I connected the battery to the radio's memory, speakers, camera, etc. as it should be, and as for switching on the radio, I did the following: in the fuse box I found + 12V after turning the key to position 1, i.e. not yet ignition, later I checked if there is + 12V on the ignition too that it is. So in place of this fuse, I entered the bypass and plugged in the old and new fuses, pulled the wire to the ISO cube of the radio and connected it. The radio works fine. It only doesn't work when the key is removed, but that's not a problem. I know Chinese radio is... But I only bought it because it's an old car that my fiancée drives, so she doesn't need a better one and it's still way better than the original. Here is a mirror link etc. I have only one problem with the reversing camera. When the key is turned to position 1, everything is fine after putting the reverse gear on. Looks beautiful. But when the engine is running, the picture jumps and shows no signal and turns on and off. It's likely that the interference is caused by the unshielded cable. I bought a new one, I'm waiting for the courier to bring it, when I connect it, I'll tell you what and how.

Szymon7507 wrote:

after turning the key to position 1, i.e. not yet ignition, later I checked if there is + 12V on the ignition, it turned out to be

This is ignition, i.e. ACC / ON, engine start is Engine START, i.e. supplying voltage to the starter. With ACC/ON without starting the engine, you already have the necessary voltages in the circuit.

Szymon7507 wrote:

It only doesn't work when the key is removed, but that's not a problem

Because you cut off ACC / ON, you would have to connect the Battery + cable directly to the battery, so that when the Ignition Switch or ACC / ON runs out of voltage, the radio goes to sleep.

Szymon7507 wrote:

it's so much better than the original

Well, there are more goodies, that's for sure.

Szymon7507 wrote:

But when the engine is running, the picture jumps and shows no signal and turns on and off

Are you talking about the camera? reversing?

Yes, the reversing camera

Added after 2 [minutes]:

Because you cut off ACC / ON, you would have to connect the Battery + cable directly to the battery, so that when the Ignition Switch or ACC / ON lacks power, the radio goes to sleep.


Am I to understand that two wires are to be connected from the battery to the radio? Because one of the batteries is memory and the other is also from the battery but to excite the radio?

Szymon7507 wrote:

I have only one problem with the reversing camera. When the key is turned to position 1, everything is fine after putting the reverse gear on. Looks beautiful. But when the engine is running, the picture jumps and shows no signal and turns on and off. It's likely that the interference is caused by the unshielded cable.

Are you sure you connected the power supply of the camera directly to the reverse bulb?
You need to control the camera's power supply so that it is powered from a different +12V point than the reverse bulb. / e.g. as is, power supply from the rear cigarette lighter,. etc... / The easiest way to control it is to use the relay controlled by the reverse bulb.

BUP 12V on which there should be voltage all the time, in the original cube it is like that, use it.
To the ACC radio, connect a plus from the car that turns off with the key / the easiest way is to look in the fuse box /

This radio must have the ACC positive connected to put it to sleep

Szymon7507 wrote:

Yes, the reversing camera

You have the choice of either SMALL anti-interference filter for reversing camera. - it doesn't always work.
Or power the camera from the battery and the reverse light will turn on relay 12V power supply from the battery to the camera and the A2 Back IN cable.

Szymon7507 wrote:

Am I to understand that two wires are to be connected from the battery to the radio? Because one of the batteries is memory and the other is also from the battery but to excite the radio?

Battery + is the memory of the radio, i.e. when you turn the ignition switch to OFF, i.e. turned off, the radio goes into sleep mode after a while and a small current is drawn from the battery to maintain the radio memory.



You probably have your camera hooked up like this:

Yes, I have the same camera connected. I was thinking about a 12-24V 80A relay for cars

Added after 4 [minutes]:

I thought about cutting the RCA cable and inserting a relay there

Szymon7507 wrote:

Yes, I have the same camera connected. I was thinking about a 12-24V 80A relay for cars

First, check out the z option rectifier diode .

In fact, this is also a thought, I should have it somewhere in the workshop

So I finally found some time today and started playing. I plugged in a 12V relay to the reverse lamp (coil).
As a power supply, I took 12V from the main power supply, the picture was still jumping. I plugged in a 12V rectifier diode and it didn't help either. In my opinion, this is not the fault of the radio, without the ignition, the picture does not jump. I'm already running out of ideas.
I also climbed the rectifier diode to the main power supply of the radio. Nowz I thought about powering from the battery and not from the main power supply, but I doubt that it will help. And one more a bit stupid because I'm thinking of giving rectifier diodes for each wire 😃. I also doubt it will work properly. Anyone got an idea? I will be really grateful.

Added after 1 [minutes]:

gradek83 wrote:

Szymon7507 wrote:

Yes, I have the same camera connected. I was thinking about a 12-24V 80A relay for cars

First, check out the z option rectifier diode .

Doesn't work. Any other idea?

Or the alternator sows some interference and if so, what comes to mind can be used linear stabilizer 12V to camcorder constant 12V filtered to provide. Or check the voltage regulator on the alternator.