hi ive searched all over the forums for this and cant seem to find anything on it. im trying to install a new headunit in my 2003 a4 b6 its the JVC KW-AVX810. i bought this wiring harness from crutchfield and its no good because i dont get sound from my rear speakers. i read somewhere that, that harness does not have the amp integrated and would have to power the rear speakers separately i really dont wanna do that and just want everything to work like it was with the symphony unit i had in there. my question is: has anyone out there done this without a wiring harness, just hot wiring it to the existing harness that the car has? i think that is the only way its going to function like it was meant to. any help or a step by step diy would be greatly appreciated.

 

go to installer.com and type ur car in look for the amp integrated harness u cannot repeat cannot hot wire ull blow ur amp and cause fire