Wow. Speechless. This might be the worst old GM car wiring, that has been posted here.
This is disturbing. As now I am starting to wonder if this vehicle had the old harness burned and replaced.
Heres why.
1. The vehicle has a lot of work done to the engine. From the aftermarket gauges, and the ports added, for oil and coolant which also is wired also with the light dimmer switch, as the dash was put back together but as you'd expect, it was done to a pathetic extent.
2. There is, and I am not kidding- nearly 80% of the entire harness cut, starting from alternator then the HEI under the hood, to under the dash casually let hanging, the main gromet in the firewall might be missing.
3. Theres a rubber vacuum hose, in a state that looks like it was exposed to flammable combustion temperatures.