Thread: Canepole or any electrician, question on bulb polarity

Ed it looks like the wire are just pushed in from the back under the brass clips. If you remove it from the trailer you should be able to reverse the wires.
"gene"

It's not the matter of the wires, they are easy enough to swap. It's the screw that gets grounded into the frame of the trailer, and the fact that it goes through the plate which touches the bottom part of the bulb. It's supposed to be the "positive" but since it's screwed to the frame, it has to be the negative. LED replacement lights will not work in this configuration. The bottom of the bulb is supposed to be the positive (like every bulb ever made). The engineer that designed these fixtures musta missed a couple of key days of school.

You already have enough info to satisfy your question, so I won't beat that which is already dead. I will tell you how you can replace them for the last time, as I did on my boat trailer. Pitch all of them in the trash and go on line and buy sealed LED replacement lights. I had to do a little bit to make them last but they submerge, road grime and anything else I can throw at them and have no issues. In this case, cheaper to spend money. Happy trails. Or trailering, Or whatever.

Yeah I was gonna do that but I decided that since this will likely be this trailers last trip to IL I wasn't gonna spend anything else on it. It'll retire after this.

Instant fix - Take that screw out and put a nylon one in. Lowes or HD carries them.

Originally Posted by Barnacle Bill

Instant fix - Take that screw out and put a nylon one in. Lowes or HD carries them.

I did not think of that, brilliant.

I'd have to buy a new trailer

That thing looks so old it was prob made before LED's existed.