1989 Grand Prix wiring diagram
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=19142
Printed Date: May 16, 2025 at 3:40 PM
Topic: 1989 Grand Prix wiring diagram
Posted By: gulleyjr
Subject: 1989 Grand Prix wiring diagram
Date Posted: September 21, 2003 at 9:05 PM
I have a 1989 Pontiac Grand Prix with ungrounded speakers. Could somebody please tell me what this means? It has a seperate radio and tape player and the gm harness for that year doesn't fit it. I cannot seem to find the speakers with my tester and the wires connected to them do not match whats going to the radio. Could somebody please hook me up with a wiring diagram or give me the down low on what i need to do to get my reciever hooked up. I greatley appreciate it.
Replies:
Posted By: Sebastian018
Date Posted: September 22, 2003 at 8:29 AM
1988-91 Pontiac Grand Prix Stereo Information
Constant 12V+ Orange
Switched 12V+ Yellow
Ground Black
Illumination Gray
Dimmer Brown
Antenna Trigger Pink
Antenna Right Rear
Front Speakers 4" x 6" Dash
Left Front (+) Tan
Left Front (-) Gray
Right Front (+) Light Green
Right Front (-) Dark Green
Rear Speakers 6" x 9" Rear Deck
Left Rear (+) Brown
Left Rear (-) Yellow
Right Rear (+) Dark Blue
Right Rear (-) Light Blue
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