Quick question about H/U upgrade
 

I got 7" touch screen, frame and connectors from Metra. All seems right and hooked up good, but A/M H/U looks like aint getting any power, so i hooked up my stock H/U just to power and it doesnt work either, so i thought i f'ed up at that point. I hook my stock h/u back withall plugs and wires(antena + something else i dont know what) and it turns on like nothing happend, not even in the SAFE mode. I tried again with a/f h/u and nothing again.Am i missing something, or how the hell i hook up power to a/f h/u?

P.S.: i did research here, on AZ techaudio, some avic forum, and audidiy.com. Still lost.

Any inputswould be appreciated,
Thanks

RE: Quick question about H/U upgrade
 

Sounds like a ground problem to me. Try attaching another ground to an actual part of the metal body of the car.

RE: Quick question about H/U upgrade
 

thanks i'll try that. does anybody know where i can find color decoding for all these wires, i know there is a diagram on stock radio but its way too confusing

RE: Quick question about H/U upgrade
 

sounds like you blew the fuse. easiest fix and the last place usually checked.

RE: Quick question about H/U upgrade
 

sorry forgat to mention, i check fuse on the h/u its good, also it has some kinda fuse on the powerwire and it seems fine too. Im really lost why my stock radio wont work unless i plug EVERYTHING back in, its like power and ground coming from different plugs or some kinda safety device i guess

RE: Quick question about H/U upgrade
 

Problem found, audi's stock REM line was giving out only 10V apperantly not enough for my new h/u, once i pluged all + from a/f h/u to power it worked, too bad it'll be without REM line.