Not really a trailer question, but more of a truck question. I'll acknowledge I haven't tried to troubleshoot yet, but thought I'd see if the TDR brain trust might have had something like this occur. Hooked up my gooseneck flatbed this morning. Used the 7 prong plug in the side of the bed. Right trailer lights did not work, the left ones did. Got home, moved the connector from the bed plug to the bumper 7 prong plug and all the lights work. Pretty well isolates it to the in bed connector, but as I mentioned, I haven't tried a continuity tester or anything yet. Any quick ideas? Still under warranty so if it's not just something simple, the dealer can fix it. Thanks.