There was a time when a hot rodder copied a basic wiring diagram out of a motor's manual and bought the switches, relays, and connectors at the local auto parts store. The wire was what was available ...
It isn't often that your average hot rodder is referred to as a visionary, but swapping out those old T3 headlights for a set of modern Halogen (or even ultra-modern LED) lights will have you feeling ...