Can you run say aftermarket fog light and rear bumper cube lights directly to the upfitter switches.

 

sure - that’s what they’re there for (stuff like that)

 

I have a compressor for my airbags on one but I kept seeing on here with lights people talking about doing stuff on Forscan to make them work. Thanks I kinda figured they would.

 

i think (but am not sure) that if you install fog lights into a truck that didn’t come with them, and you wire them to the oem headlight/foglight switch, you might have to use Forscan to make the switch recognize that foglights.

but that doesn’t apply to anything you wire right to the aux switches

you can always test stuff before you actually install it by just putting the stuff on the cab floor and hooking it up temporarily to an aux switch just so that you know it will work before going through the entire installation