[barefooter14]

you just have to ground a certain wire its no biggy ill ask my buddy who used to do this for a living ha.

 

[barefooter14]

TAKE THE GREEN WIRE IN THE WIRE HARNESS AND HOOK IT UP TO THE SAME GROUNG THAT THE BLACK WIRE IS HOOK UP TO . yOUR PROBLEM WILL BE FIXED.. thats what my buddy said also a few others but he said thats your best bet for most pioneers.

or try this Pioneer Bypass - Directions

or google for a little bit and find something. my buddy can get a wiring diagram for this on wed.just need to know what model it is.