No Power To Fog Light Switch (2017 Thunderbird Lt)

As the title says. I've been sporadically trying to hunt down why my fog lights aren't coming on, but so far, no dice. Today, I verified the following:

• no power at bulbs
• relay (in the front fork area) is good; no power is getting to it
• no power at the switch
• fuse is good

I'm sure the next step is probably "look at all the wiring", but that's kinda tough given how much of it goes through the body. I figured I'd ask here, see if anyone else has had this issue.

Thanks!