LMC LED tail lights help

[slimjim66]

Hey guys, I bought these tail light for my build a while back, I’m finally getting around to installing them and before I did I thought I would test them to see how bright they were and I can’t get either of them to work. I’ve taken them apart, checked the harness, used new gator clip test wires and nothing.

Am I missing something here, black to ground and white to positive should make them fire no? I’ve tried reversing the wires and still nothing.

[The Rocknrod]

I have the same units only stainless housings. I used a battery charger when I first got them, black and red is all I used. Then after install same thing. However I did ground the housing.

[slimjim66]

Ok I got it, black and white are positive and the housing is the ground.

Thanks Rod, your message made me think a different way

[The Rocknrod]

I didnt say that!

[slimjim66]

Originally Posted by The Rocknrod

I didnt say that!

It’s when you said “however I did ground the housing” that made me think.

[slimjim66]

I always ground first then put the power on, and vice versa when removing something attached to the battery. Had I did it in reverse I would have noticed the lights worked when I had the housing grounded and wires on the positive. You don’t think you helped but you did. I’m a millwright not an electrician

[The Rocknrod]

Sorry, I was on the phone when post #3 popped up and didn't have time to expand my comments.

[forestb]

I don't know if you already know this but you will need to replace your mechanical blinker with a electric blinker and even after doing that I have had issues with switching over to LED's

[Heater63]

WAIT WAIT!!! Your missing the key point. You have 3 wires and black IS PROBABLY NOT THE GROUND! Look at your second picture, holding the unit in your hand. Look on the LED circuit board where the wires insert. Circuit board should be labeled something like Park/Run, Brake, and Ground.

On mine, the WHITE IS THE GROUND.

Yes they should work with jumper wires, take it to your battery and jump it. The brake light should be brighter than the running lights.
Yes, the light grounds through the physical mounting of light bucket/frame, there is not a ground wire in the harness. I run an extra ground wires from the mounting studs and rear bed to frame for extra good ground.

[The Rocknrod]

That's it. Now come to think about it Heater63 is correct. I knew I ground the housing for some reason.

[sstock]

See that is the problem, the chineese dont know that here in the states black is always the grounding wire in automotive wiring.

[The Rocknrod]

Originally Posted by sstock

See that is the problem, the chineese dont know that here in the states black is always the grounding wire in automotive wiring.

I'd be the last person to stand up for the chinese, however they dont design these. Someone in the states designed it, the chinese (maybe, we dont know) makes them.
So who was originator that sent the design to the chinese manufacturer in the first place, that by the way has been copied a few times since then.