I know there are several threads on this topic as I have read through several but none of them are hitting directly on my issue. I hit a bump and lost my dash lights, and later found out my running / parking lights. I replaced the headlight switch and inspected the harness and everything looked fine. Turned on the headlights, blew F17 in the PDC. All the other fuses are fine in both the PDC and the kick panel fuse block. Dome light works, etc ... and I have not done any work to the radio, speakers, or anything else. Trailer harness is also factory but seems to check out alright. Any suggestions on a direction to go would be helpful. Thanks in advance.

Not sure if this'll help. I live in Michigan. If you've checked everything else, take out your spare. Take off the plastic. Underneath is the hub for the lights and electrics in the back. If you have a rust hole at all water and junk blows up in there. The connections go bad and you ground out. I had to fill mine with spray foam. Good luck.