2012 GMC Sierra 1500 Stereo Wiring Information
Radio Battery Constant 12V+ Wire: Red/White
Radio Accessory Switched 12V+ Wire: Dark Green
Radio Ground Wire: Black
Radio Dimmer Wire: Yellow
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
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
2012 GMC Sierra 1500 Speaker Sizes
Audio Front Tweeter Size: 3/4″ Tweeters
Audio Front Speakers Size: 6 1/2″ Speakers
Audio Rear Speakers Size: 6 1/2″ Speakers
The following information is currently not available:
Radio Illumination Wire
Radio Antenna Trigger Wire
Radio Amp Trigger Wire
Subwoofer Speaker Positive Wire (+)
Subwoofer Speaker Negative Wire (-)
Subwoofer Speaker Size
Subwoofer Speaker Depth
*If you know any of the above or any other missing information please use the comment box below to notify us.