I was on a bit of a rough trail hunting, when I parked my dash lights, marker lights, license plate lights and buzzer stay on constantly. The headlight/dimmer/fog light switch didn't dim the dash lights but dims my marker lights. I put in a new trailer wiring harness as I read that could be an issue, replaced the headlight/dimmer/ fog light switch and no change, still dims the marker lights and the lights still stay on. Any idea what is going on?