I had everything grounded....Well now I know that the pink wire is for the ground on the Bose amp,...What are the other wires in the harness for?...I know I'll lose volume control on the steering wheel and the continued play of the deck when the key is turned off.... I just took back the wire harness I bought because I was told that it doesn't work.....I also bought a Scosche line converter that was supposedly needed to complete the install... the Gmos 04 runs about 100.00 or more but is it really needed?