99 GMC suburban rear speakers dont work. I recently replaced the AC Delco head

[james g]

unit with pioneer.? Now the rear speakers dont work. I've heard that i might need to bypass the factory amp. if this is the case, how is it done? thanks

[Molson02536]

Originally Posted by james g

unit with pioneer.? Now the rear speakers dont work. I've heard that i might need to bypass the factory amp. if this is the case, how is it done? thanks

Here is a link that should help you get your wiring in order. http://documents.victorytechnologies...oduct/9539.pdf

If you don't have the Bose system, here is the wire harness color code.

1999 GMC Suburban Car Audio Wiring Guide

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 6 1/2″
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6 1/2″
Car Audio Rear Speakers Location: Rear Doors
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Good luck and hope this helps you get some tunes.