H4 headlight relay question Options

[SKL1]

Putting in new H4 headlights with the 100W high beam and utilizing the "relay" to protect the OEM wiring.
Using the relay and new lights from Pelican and have checked and rechecked my wiring several times. Fused power from battery to #30. #85 to ground. #87 to high beam terminal of each light, #86 to old headlight wiring on one side, and taped off the other as recommended.

I have 12V into relay when high beams are on, and good 12V from battery, but neither high beam works thru the system, though low beams work. Fuses all good- new JWest fuse panel. Bulbs new and work fine when bench tested.

Any ideas???? Have 2 new relays from Pelican and have tried both...

('73 2.0)

[ClayPerrine]

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For one side you will need two relays, one for low beam and one for high beam.

Low beam relay:

Pin #30. Power for lights.
Pin #87 Output to Low beam Filament in bulb.
Pin #85 Low beam wire from factory harness.
Pin #86 Ground.

High beam relay:

Pin #30. Power for lights.
Pin #87 Output to High beam Filament in bulb.
Pin #85 High beam wire from factory harness.
Pin #86 Ground.

You still need the ground wire on the back of the bulb to ground it. Run it and the relay grounds to the ground point for the headlight motor.

I mounted mine under the headlight bucket. I used the JWest 911 headlight harness kit, and added an inline 30A fuse and longer, heavier wires all the way back to the battery to prevent voltage drop. I used the same gauge wires as the main electrical feed wires in the chassis harness.

It makes a real difference in light output having the brighter bulbs. Plus, I have an early 911 headlight switch, which is very expensive these days. Taking the load of the headlights off the switch will make it last much longer.