What are “upfitter witches”?
The typical "AUX" bank of switches you find in Ford trucks. Most SD have them, usually a set of 4 to hook up any aixisallary equipment...lights, plow equip, I've used them for remote turn on to an amp, allows client to toggle bass on/off w ease if someone doesnt like it or dont want to disturb kids in the vehicle.
OP, are those as bright as they look? I know some cameras exaggerate blue led sometimes. I was looking at a a set of what appears to be the same, only in green with 4 switches for the extra electrical goodies I plan to run to the rear seat and cargo area. If they are I may have to rethink that as they look far too distracting for me. Csnt stand bright lights, I keep the dash/cluster lit just enough to see, barely.