 Right. It's going to be something obvious. We lost a ground or we have a loose ground or a dirty ground connection. I would definitely look over the rear of this harness by the trailer connector. Did anybody modify or change the trailer wiring harness? I would definitely be on the lookout for aftermarket installs. Did somebody add a stereo? Did somebody add any sort of aftermarket, you know, any accessories? I've seen guys hack into wiring harnesses, cause more problems than Carter has pills, as the expression goes.