Just bought a 2010 a month ago. When I use my left turn signal, the clock and dash lights blink with it. Also my radio will randomly turn off and on by itself. Bought a camper and wasn’t sure if the wiring on the truck was set up right or the trailer wiring wasn’t. Bought a tester for a 4 prong connection and the tester shows the left turn signal is always on. Thoughts, ready go...