I need some Wiring info or confirmation

Voodoo said:

Im no ICE expert, so im sure the other peeps on here will clarify exactly, but I have the JVC AVX1 model, few steps down from that, had an absolute nightmare finding space at the back to fit it in, too many cables and not enough spots to put them. Connections fitted no problem all standard, apart from the ariel, you will need a ISO to DIN I believe, PC5-90 was the one I cam across. and yes I had to swap the red/white cable with yellow/red cable, I believe its pin 7 and 4 on the origonal ISO connector, they are written on if you look carefully but sounds like this might already of been done on yours.
For the handbrake cable that comes with them so you cant whatch it whilst in motion, I just wired that to the chassis off to the left behind the center console, that gets around that little issue and alows you to have the DVD player on whilst driving, although I wouldnt recomend whatching a movie on it at the same time more for your passengers.

Click to expand...

Yes, thanks of these information. So you mean that red/white in the car´s ISO? I only noticed that in the JVC s own ISO harness has allready these plugs that i can switch the red and yellow or put red to yellow and leave one wire to no connection. So then you wouldnt need to touch the cars wires. Or what?

And about the cars rear speakers. I noticed when i bought the car that the rear speakers are not working. I guess the wires etc. are not connected in Blaupunkt because i checked the back doors and speakers where in place, so the car has 6 speaker system.
This being my first A3 or even Audi are in these used some sort of active speakers ystems, and how i know if there are that? And are there execptions etc? Since i dont really know yet well these cars systems . I have had this only about 3-4 months now.

AndyMac said:

Yes Red with white stripe and yellow with re stripe on the cars ISO harness. these are back to front on the Audi ISO plug so need to be swapped over.
All non Bose Audi's have active rear speakers. Only the fronts run off the HU. The A3 has a tupperware sub which also runs off the rear amp. In order to wire this into an aftermarket HU you need an adapter to take the rear RCA output and convert it to the non standard mini ISO plug that Audi use. You will probably get an unbalanced sound as a result as the rear amp is only 2 x 20w for the rears and 1 x 50w for the sub.
You would be better off running new speaker cable to the rear speakers and run them directly off the new HU, then connect the RCA adapter to the sub out RCA on the new HU to at least give you some sub output.
Replacing the sub is a much better option and will dramatically improve everything in the car.

Click to expand...

I got at last the old cd player out from the dash. Now i have the problem that i dont see any wires near by , that would be for sub +rear. What are those looking like colour etc? And where is that sub located i didnt know about that either.
Only cables i did see is ISO coming to player, these wires that were covered by black shrink mesh or something , and then there´s aerial cable that comes from the shrink mesh too.
If those lines need somekind adapter, it will delay this thing, if i ever find those . I want at least somekind rear sound first , now theres nothing.

AndyMac said:

The sub is in the left rear cubbyhole in the boot - the black plastic biscuit tin with a cheap door speaker mounted in it facing the rear. The amp is inside it.
The plug you're looking for behind the HU is a 20pin long thin connector either multicoloured (blue/green/yellow) or solid black.
Shown here:

Or here:

Put your hand right down the back behind the HU and it'll be there.
This plugs into a red adapter which will then give you standard RCA inputs and a flying lead for the remote turn on for the amp.

Click to expand...