SierraScreech

I ran many switching wires up through the floor under the drivers side foot area through that round rubber seal that the e-brake cable runs through on my 15 sierra. You'll have to remove the bottom trim and lift carpet to fetch them and stick them down using sticky backs and zip ties. I would just poke a hole through that seal with an awl so it seals great around the wires. I never noticed a bump in the carpet after installation if it's done clean. I just ran them to the center console side slot and installed some switches there. Probably a little late response on this , ha.