Originally Posted by turbo
behind the fuse box, just above the main connector to the cab interior, there's a big blank spot that is clear of obstructions on both sides -- it's an ideal place to route the wiring, and fairly unobtrusive once the fuse box is bolted back in place.
Even better description of my suggestion.
How about a pic too!!?!? lol...
Red circle area, I've got two 3/4" holes. with 5/8" holed grommets. I've relocated all my accesories wiring to those holes. Only got one wire remaining and it's the pain in the butt one, the 4ga amp power wire that been in the steering boot for 4 years.
Take the ground connection off the battery first. To access this area, remove the two bolts on the fender that mounts the fuse box to the fender. Takes an 8mm socket. Then it just sorta slides right out. May wanna take a 10mm to the front of it to remove the battery connection to the fuse box too to allow for more movement of the box up and out of the way. Confirm nothing is on the in-cab side of the engine bay/in-cab connectors...there's nothing on mine yours shouldn't be different.
You can get grommets sized just for one particular wire size....so if you just wanna run your 4ga or whatever, grab a grommet or a trim plastic bezel for 4ga, drill to size, run wire, attach grommet to body. No need for a big holes like mine, but I got tons of wires going in and out(4 lights, air compressor, 4 more lights, 2 more lights, etc).