Customer came in with some electrical issues on their trailer and was looking to get back on the road. We diagnosed by testng grounds and electrical connections.  We checked wiring, bulbs, lighting issues.  We checked for corrosion, removed bad wiring and replaced with new.  Added water sealed connections.  Tested all lights were working properly and let the customer know they could come pick up their trailer.  We were happy to see their issue resolved and to get them back on the road.