1975 Ford F150 Wiring Diagram
One of the most appealing qualities of old trucks is that they are simple, which generally makes them reliable—and easy to fix when they are less than reliable. That was the situation we were in with our Cheap Truck Challenge Ford F-150, Raymond ("Raymond," Oct. '13). Nate's Precision had upgraded the truck with a 460 engine from LA Speed, an Offroad Design Doubler, and Super Duty axles, but electrical gremlins had left us on the side of the road more than once. This is a simple truck, with a manual transmission, a carbureted engine, and no computers to speak of. As we looked for the cause of the issue we thought we found the smoking gun more than once, with loose wires, poor grounding, and household wire nuts added at some point in the truck's life. Instead of giving us confidence that the issue was resolved, the more closely we looked at the wiring the more problems we found. If you and e