Rustfish
Member
Spent way too long on this yesterday and didn't find information relevant to this specific truck anywhere so I'm leaving it here. The location of the Aux Switch pass through wires in the cab is above the fuse box in the passenger side footwell. In my 2019 they were taped back in a bundle just above the fuse box as pictured. They are plenty long once you get them un bundled. To do that, I was able to use some long scissors to carefully snip through the closest tape then pull them out of more tape farther in that I never saw. One other note. There are 2 wires that are thicker for the 15 amp switches if you're going to run something on the inside that needs more juice. Good luck!
