Sucro Headlight Relay kit question
 

I did a search, but didn't see anything that addressed the early cars specifically. I upgraded to H4's and am installing one of the Marcus Sucro relay kits. The wiring and instructions look straightforward but I do have one question.

The kit has two relays and each has a blue wire. One goes to the high beam fuse and one to the low beam fuse. My car has two high beam and two low beam fuses (Hi-L, Hi-R, Low-L, Low-R). Do later cars have a single fuse for the highs and single one for the lows? I'm not sure how to wire this kit. I would think that another option would be to buy an extra kit and run a total of 4 relays rather than two. Has anyone here dealt with this issue?

Thanks in advance.

Actually ... that is a subtle hint that relays are supposed to be dedicated to a single filament!

But, to answer your specific question ... it doesn't matter which of the two high-beam or low-beam fuses you pick to use for a signal to the relay.

Why don't you put two relay kits there (four relays). That way if there is a short in one bulb, you don't loose both of them. Plus if you upgrade the wiring to the headlights, you can run some super high wattage bulbs in there and burn holes in the cars in front of you!

I had the same thoughts when i installed them on my 73.5. there was only one wire that entered the pair of fuses on the side of the fuse block closest the front of the car, and two that exit on the opposite side.

just to be sure, I broke out the wiring diagram in the haines manual. and it shows that on one side of the fuse block, they are tied together . the one wire side comes from the head light switch, the each of the two wires runs to a headlight. I even confirmed by pulling the fuses one at a time, to make sure only one light went out, and then pulled the single with to make sure both went out.

So what you want to do is have the switch side (towards front of car/ single wire for the pair of fuses), that single wire goes to the black wire on the relay, blue wire to where the single wire was in the fuse block.

hope that helps for than confuses (no pun intended),
j