Why Don’t my Trailer Lights Work?

[@debluetailfly]

As a former truck driver, most trailer light problems were due to bad grounds, mostly from corrosion. They would send us to a shop for repair, but that could take hours of waiting to get into the shop. A small tool kit and some extra screws and bolts and I could fix them myself in a LOT less time. They company wouldn't pay me a penny for all the repairs I made, but it saved me a lot of time that I could be driving or sleeping.

[@olivei2484]

Good on the trailer lights. Some vehicle-trailer combos use the hitch as ground. I think that is really old school though.

[@ocean_capable_small_sailboat]

I found a trailer! Bought it last sunday and the first thing I did was order new LED brakelights, as well as a dozen other things. Thanks for the wiring video.

[@JenkinsBoatWorks]

hope the light wiring goes easy for you!

[@olivei2484]

Nice! I did my dedicated ground as one wire, t-tapped the marker lights and taillights. This then went to a grounding lug on the tongue, connected to the plug wire. I also made a pig-tail so I could test the trailer lights with out the tow vehicle (plug into a battery). I do disconnect the truck from trailer when submerging the trailer, even though it is fresh water. Saves the regular type bulbs a bit longer.