How did the wiring go? Schematic?
"I tried the 9-volt battery test on the driver's side and the headlight turns on with the high beam switch off and on."
What about the low beam, or is that what you meant?
Ok. That didn't work.
I'm working with Bob Brown (most excellent) Headlight Relay kit.
I ran a 30A fused wire directly from my battery to the passenger side headlight pod. That went to the pair of relays mounted there. I ran another 30A fused wire across to the driver's side headlight pod.
Bob's troubleshooting says:
"You can test the operation of the headlight mod using a common 9-volt transistor radio battery....with everything hooked up *except the H4 Male plug* connect one side of the 9V battery to the pin with the Black (common) wire and the other side of the battery to a Green or Gray wire (activates high & low beams). The headlight should illuminate appropriately. If not, check your power connection(s) for a proper 12 volt supply and check the integrity of your ground. The 9-volt battery simply activates the appropriate headlight relay.
My issue is that on the driver's side, the low beam doesn't work but the high beam does. Both lights on the passenger side work fine. I swapped the relays on the driver's side and the problem persists that the low beam doesn't work but the high beam does.
If nothing worked on the driver's side, then the 9-volt battery test would reveal that it's either a power or a ground issue. But the fact the high beam works but not the low beam is confusing.
Before I put in the relays, the driver's side headlight worked on high and low beam.
I swapped in a new bulb and get the same results. True, it could be 2 bad bulbs but that seems a little less iffy to me so I'm assuming it *must* be something else.
Looking for suggestions of what could be the problem.
Thanks,
Larry