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Hello, I was installing a new taillight on my 04 Softail. 3 wires, ground(black), running(red) and brake light(blue). I connected them to the bike’s harness and it doesn’t work. When I bench tested the light it works fine.
now...did another test and connected my wires and isolated the ground wire. Touched a metal part of the frame and boom...lights worked!
so clearly my ground in my bikes wire harness is faulty.
my question is, can I run a separate wire from the ground post near the battery to the back of my bike and connect it directly to the taillight?
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