wiring radio 2005 Sunfire | Pontiac Owners Group Jun 08, 2019factory wiring for base radio/CD player OK, got my after market radio/CD player installed in my 2005 Sunfire. Here's the deal: the chimes for keys left in the ignition, lights left on, etc. run thru the factory radio. From what I can tell, that was the PURPLE wire which I did NOT use on the "new" radio. 2005 Pontiac Sunfire Car Radio Wiring Diagram Whether your an expert Pontiac Sunfire mobile electronics installer, Pontiac Sunfire fanatic, or a novice Pontiac Sunfire enthusiast with a 2005 Pontiac Sunfire, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2005 Pontiac Sunfire vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.
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