Trailer lights not working

[The motor guy]

Originally Posted By: chemman
Remember with aluminum, once it is exposed to air, an essentially invisible layer of aluminum oxide forms rather quickly. Aluminum oxide is not a very good electrical conductor. After you polish the aluminum and make your ground connection, you might want to spray some battery terminal sealant over the connection to slow down the inevitable process of aluminum turning into aluminum oxide.


Learn something new everyday. It looked clean to me, but I guess not clean enough. I'm used to galvanized trailers, not aluminum I beam.

 

[supton]

Get some alox and use that on the joints to cut down on corrosion. I believe I got mine from Home Depot. Use it just like dielectric grease.

 

[grampi]

Put these on wherever there is a grounding connection. They helped immensely with my trailer because they dig into the metal...

https://www.grainger.com/product/1NY46?cm_mmc=PPC:+Google+PLA&s_kwcid=AL!2966!3!50916727797!!!g!82128376797!&ef_id=W2SMRQAAAJCjnRCq:20180808122344:s