make your headlights twice as bright
and cut down the chances of electrical fire
The headlight relay is a helpful upgrade. When I did it, I used an aftermarket relay and spliced in to the high beam and low beam wires under the
hood, to the headights. The objective is to have as little voltage drop as possible, between the battery and the lights. So that means large gauge wire to the relay(s), and tapping directly off the battery side of the solenoid. Get the headlight and dimmer switch, and all that small gauge wire connecting them, out of the headlamp circuit - the only contacts in the circuit will be the relay contacts.