1985 Gmc Sierra Radio Wiring Diagram. Swapping yellow wires will. Once you sign in follow these instructions to access our repair guides.
Locate the 12 volt constant wire first. Radio battery constant 12v wire. Yellow radio ground wire.
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Automotive wiring in a 1998 gmc sierra 2500 vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory. The main wiring diagrams are laid out so that the after the main diagrams are systems diagrams. The car hackers handbook will give you a deeper understanding of the computer. Label it or splice to constant wire on aftermarket stereo first.