There is alot I dont know or never will about electicity, how is works and why, but I can attest to what I see and what I read on a voltmeter and the lights are now brighter and now operating on approx. 1.5 volts more than before the relay installation. I used the alternator as my bus because it is very close to the headlights and gave me the shortest wire run possible with no voltage loss. Breaker and relays are mounted on the inner fender close to the horn, again very short wire run to the headlights. Short heavy wires means less voltage loss. Alan said probably old wires, less than perfect connections, and long (maybe undersized..??) wire runs caused the early lower voltage reading (before relay install). I agree completely with his diagnosis and thank him for sending me the website with the install information. Thanks Alan
