jimbeater
+1y
problem is more than likely in the very rear harness, or sockets them selves. you have tried different bulbs first right? my rear harness has been spliced into, i dont even currently have license plate light on there... but i have a different box im cleaning up shortly to toss on, so i got excuses...lol
but could be the switch itself too, but concentrate on the wireing you can see first, as the stuff in the cad is most likely alright... it's bundled together, and wrapped up