but opting to put in relays will make it basically unnecessary to spend much time, effort, or money on the original headlamp circuit finding and fixing high resistance.
I'm sorry Dan, but saying that installing the relays makes putting in the time for proper diagnostics unnecessary is foolish. I fully agree that the relays will improve the illumination of early vehicles. I also agree that the relays will significantly reduce the load on the original lighting circuit. I will however stand firm that to simply take a quick look at things, put in the relays and call it good, is a recipe for disaster. Sure, it could just be the breaker in the switch is old and soft, but what if it's something more? I've worked on vehicle wiring for quite a long time and if there is one thing I know for a fact, it's that if you take wiring for granted, it will bite you in the bum.
