Thread: Payment made for the answer

Originally Posted by MatrixPC

How did you "modded" the CD changer audio signal?
- Did you find the audio ground from the changer to the HU (normally it doesn't matter that much)?
- Are you using relay to switch between the CD changer and the computer for sound?

I did a little the "aux" audio in for my HU a little differnt from your but the same concept "jamp the audio from the cd player to the HU amplifier".
I used a DPDT relay to to switch the audio signal between the CD player module of the HU and the car PC. After I check for the audio ground from the CD player to the case, well they are the same.

So I just tap the audio from the CD to the HU case, nope doesn't work, I have engine whining.
I have to solder the audio from the ground to the PCB ground point. The noise is basically gone (well still there but you have to really listen to it to hear. Road noise and wind noise is much lounder than the engine whine.

Ok, I did it by simply identifying the audio lines, cutting them at the back from the CD changer and attached female RCA plugs. A little more basic than your method.

Are you saying that you fixed the problem by grounding the audio from the CD changer line to the same point that you grounded everything else ??.

And to do this will I need to cut the ground wire from the CD changer end rather than just splicing it ?????