GMC Amp Power Tap For some vehicles when upgrading to a radios that needs an amp for increased volume you'll need to tap into the thin pink wire on the amp harness (G-INTAMP). You can tap into the thin pink wire at the amp or at the radio. We ...
How to verify pre-wiring at the tailgate on a Chevy/GM Please use the below pictures, and video to help verify you are pre-wired. You will need to CUT THE COVERING around the plug back far enough to not only see the blue/white, and yellow/grey wires ...