2015 SL no trailer running lights

[Ely]

Hey gang. Loooooong time lurker here. Had a 95 XE, an 01 SE, and now a 15 SL Pathy. Then there was the Sentra, Altima, G35, and the wife's current Quest. Suffice it to say, these forums have been invaluable over the years. So, thanks.

Anywho, I have an issue with my Pathy. I recently picked up a travel trailer and I have zero running lights. A 7 pin tester, as well as my multimeter, confirmed that the running light pin has no voltage. The only anything I've been able to turn up is some crap on e-trailer taking about a relay behind the passenger kick panel, but there's nothing there. I have the factory tow package so nothing bubba'd going on.

I'm using a Tekonsha 3050-P harness into my Tekonsha Primus IQ brake controller. Tekonsha confirmed this harness was compatible with my Pathy even though is says it for 2004-2008. Everything else works fine; brakes, brake lights, turns and hazards. The pigtail that came with the Pathy to hook up a controller has a wire for lights that the Tekonsha harness and the pigtail that came with brake controller don't have. That said, I would expect to be able to hook up a 7-4 adapter for pulling a utility trailer and have running lights. Idk. I've gone through every fuse and relay block and found nothing burnt or missing.

I'm stumped. It's under warranty, but if it's something simple I'm missing I'd just as soon fix it and be done. My confidence in my local stealerships isn't high. So...thought?