hi everyone, i ve been searching on how can i install a pioneer head unit. I was wondering is there anyway to bypass the harness. If i am installing an amp, that means that all my speaker wires will go to my amp with the rca cables. The only thing i would need to connect to the car is the ignition, blue cable, ground and positive. Please correct me if i am wrong. My radio has been broken for a while so i need to do this. any tutorials?

thanks.

2000 A4 1.8T Quattro