Join Date: Mar 2010
Location: Ventura County, CA.
The GM LAN system that the cobalts have is a pretty complex system. There are a lot of other components that all run together. There really is no way to hardwire a radio in the cobalts. Also when you try to hard wire a radio, the color of the wirse do not always match up, thus causing problems. You may want to get the Haynes repair manual, and fix your mistake.
If you want some here is a list of the wires/color and what they are.
From the radio to the Radio Antenna Module:
Antenna Signal - Coax and NCA
From The Radio To The Speakers:
RR Speaker Out (+) - Dark Blue
RR Speaker Out (-) - Light Blue
LR Speaker Out (+) - Brown
LR Speaker Out (-) - Yellow
RF Speaker Out (+) -Dark Green
RF Speaker Out (-) - Light Green
LF Speaker Out (+) - Grey
LF Speaker Out (-) - Tan
From The Radio To The Inflatebale Restraint Steering Wheel Module Coil (Steering Wheel Audio Controls)
Steerin Wheel Control Signal Wire - Dark Blue
10V Ref - White/Black
From The Radio To The Interior Lights System:
Lamp Supply Voltage Wire - Grey
From the Radio to the BCM:
Battery Wire - Red/White
From the Radio to Ground:
Ground - Black/White
From the radio to Vehicle Communitaction Interface Module (If Equipped):
Cell Voice Signal - Orange/Black
Cell Volce Low Ref - Pink/Black
I hope this helps you start getting things figured out.
2009 Imperial Blue Metallic Cobalt SS/TC Sedan - "Stock":
2008 Victory Red HHR SS - Stock
2005 Chili Pepper Red Ion Redline - Stock
2007 Sunburst Orange Metallic LS Coupe - Sold
Last edited by blu3_v1p3r; 03-16-2010 at 08:26 AM.