ok, tonite i fully traced out the headlight wiring.
i think i am going to redo it. the way they did it is not optimum for keeping the voltage loss to a minimum, especially if you are using higher current drawing bulbs than original.
both the high and low beams are powered together through a single dc circuit breaker and fed with single 12gauge wire splitting off through the relays to all 4 headlights.
off of the low beam relay there is a single 12 gauge wire that goes to the passenger side low beam lamp and then pigtails off at the lamp and then goes to the driver side lamp.
same for the high beams. so a single 12 gauge wire feeding both sides.
there was a small green wire in the pigtail at the drivers side bright headlight underneath. i was puzzled till i traced it to the bright indicator lamp on the dash.
on each side they tied the high and low beam lamps together and grounded them to the frame.
i think i will run a breaker or fuse for high and low. then replace the single 87 relays with dual 87 relays and run new dedicate 12 g wires to all 4 headlights. i may run dedicated grounds, but not sure.
fun stuff.
later
tom
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