I originally hooked up my ARB headlight relay kit and everything worked fine.
Then I replaced the stock rectangular headlights with Hella 90mm units. The low and high beams are separate, so that's 4 lamps. I couldn't get the low beams to work, but didn't know why. I finally figured out that the relay kit is ground switched. The red wire with the white stripe goes straight from the 12+ to the headlights. All of the relay switching takes place downstream of the bulbs.
I hope that helps somebody out.
Then I replaced the stock rectangular headlights with Hella 90mm units. The low and high beams are separate, so that's 4 lamps. I couldn't get the low beams to work, but didn't know why. I finally figured out that the relay kit is ground switched. The red wire with the white stripe goes straight from the 12+ to the headlights. All of the relay switching takes place downstream of the bulbs.
I hope that helps somebody out.