My car is originally a 1971 base Barracuda. As part of the make-over process, I wanted to add roadlamps and do the H-4 conversion. I followed the plan laid out by Goody, but for a 70-71 with roadlamps it needs to be modified to control the lighting correctly (i.e. not having roadlamps and brights on at the same time.) Here's what I came up with. I can provide pics as well, if needed.
I used standard four-post relays to control the low beams, high beams and road lamps. I am switching back and forth between the high beams and road lamps with a five-post relay. With my lights, the high beams will draw a total of 260W (65 W * 4), or 22 amps. Pulling that much power, you'll want a 10 ga main feeding the circuit. Not shown in the picture is the 30 amp fuse for the brights/road lamps and the 10 amp fuse for the low beams.
