Hey guys, the turn, emergency, and break lights of my boat trailer work fine but the running (night) lights won't light up. I found that my truck's fuse was blown so I replaced it. I tested the truck's plug with a multimeter and it has power now. However, the trailer's running lights still don't work. Any ideas on how to troubleshoot it? Where can I take the trailer to have it fixed? I'd like to avoid the boat shop because they charge too much.