Re: headlight relay
Brendan, before you do that, test your horns with jumpers to see if a relay is needed. I don't think a '36 has a relay 'cause the horns don't draw that much juice? I believe the '36 horn is adjustable?
In any case, your horn button simply grounds the (pos) wire closing the horn circuit. Relays are normally placed close to the unit, with a heavy gauge hot running to the relay.
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Alan
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