Running Lights Out - Others Okay

Picked up our new 2017 R-Pod 179 last weekend. Checked out everything - and I mean EVERYTHING - and had no issues at all.... except the ones I cause myself riding up the "learning curve."

After a lot of test driving on Saturday, I unhooked and set-up for the night. When I left the next morning I noticed right away every time I turned on my left signal the trailer brakes jerked on each time the blinker blinked. I had put the hitch plug from the trailer into the receptacle rotated one pin to the left. No wonder it was so hard to slide in there! Once I realized my error and reset the plug, all was well again!!

I went to fetch the camper from storage yesterday evening and noticed the running lights are not working. The bulb on the fender was "trying" - it was winking on and off - then... nothing. The last time I saw the running lighst working was last Saturday, before the little episode I describe above. I thought maybe it was a fuse, but I pulled them all and all are okay. I learned, in the process, there's a little indicator light that comes on next to the fuse when the circuit is broken - handy!! None of those indicator lights was on (except when I pulled each fuse to check it.

So I need help! I called the roadside assistance number last night - they promised a callback from a technician - but instead I was told to expect a call today to advise me where the nearest service center is. When I got the call, I was learned the closest place is an hour away, and that I could not be helped until next Wednesday at the earliest.

Today I'm going to crawl underneath and see if a wire is pinched or broken somewhere. NONE of the running lights on the trailer anywhere are working - but BOTH brake lights (and flasher lights) work fine - so I'm hoping it will be somewhere near the hitch. I did mount a bike rack on the hitch frame this weekend, so that's another suspect area - although I checked that last night and no harm was done to the wiring harness so I doubt I cut, pinched, or grounded out anything there. I suppose there could be a fault in the plug itself - if so I'll be unable to tell... unless maybe I get some sort of circuit tester to measure the current in each wire.

All the other lights and appliances working fine - only the running lights have failed.

Anyone else have this challenge? Anyone have suggestions or recommendations? We're leaving tomorrow for a weekend trip - driving during the daytime only thank goodness - we hope anyway. I sure would like everything to be perfect, though, on our first road trip.