Hey folks! I sure someone can help. I am working on a 1973 GMC 6000 Topkick with a 327sb motor. The owner "replaced" some wires from the wiring block on the firewall to some of the ignition and starting components. My problem is that I dont trust his wiring replacement was correct. Im looking for wiring diagrams for this truck but have so far been unable to locate any such animal on the web so far. I live in a remote section of northern Washington and dont have internet or even power so I rely on the public signal when Im in town. Any help with this would be great as this is a wood hauling truck and is very much needed. Thanks in advance.