I remember being TOTALLY lost when I had to begin the wiring too! LOL...Its not a good feeling not knowing where to go to learn, and UNDERSTAND the wiring to get these babys going. I went on E-Bay & bought Volume 2, of the Factory GM Service Manuel. There is a Volume 1 also, but that Volume covers mostly mechanical & body service, plus I'm cheap. Volume 2 has EVERYTHING you will need to easily figure out your wiring. It has all the diagrams that show each & every wire that exits your C-100 connector at the drivers side firewall, etc...which will help you to connect each dash gauge, A/C request wire, main keyed power wire, and on and on... Its simple after you have this book. I learned years ago that this is the only way to fly. Also, when your done, you can help others with simular questions.
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Originally Posted by LS1GMCTruck
