I haven't ever triggered aux. lights off the headlights on this truck, but am trying to now.
The goal is to trigger my aux low beams off the existing lows. The headlights have 4 wires, 2 black, one white and one blue. All four wires show 12V all the time, lights on or off. So I'm thinking it's ground switched?
If so, anybody have a clue where to tap in to run run these aux lights only when the low beams are lit??
Thanks,
J