head light relay mod

Tap into the ones that make your lights come on. :D

Seriously, the wires that go to your bulbs right now are the wires you want to use to activate your relays.
Then you run a new larger wire to power the headlights with the relays.

On my own car I used a relay for each filament on each bulb and used the existing headlight power supply wires to activate the relays for each.
This way if I loose a relay I don't loose both bulbs, but just one. (the filament that relay controls)