Hello I'm trying to run wiring to a strobe light mounted on the top of my sleeper at the very back. I'm thinking ill run it out the cab underneath and then run it all the way to the back underneath. Then I want to run it inside the back wall of the sleeper up to the roof. I'm wondering if I can drill a hole on the bottom and top right in line with a channel and then fish the wire thru the channel so I don't have to take apart the interior? Is this possible? Or any other suggestions?
Without more info and x-ray vision, not likely to work. The few sleeper back walls I’ve looked at have horizontal bracing at least at the flattop roof line. (Yes, in a condo height as well.) some at the belt line half way up. Strip the interior and look.
Don't drill holes anywhere on the back wall or roof of your truck if you can avoid it. Go through the floor and then up the back wall outside. Plenty of ways to do this cleanly. What rig? A pic would help.
They sell grommets that when you drill the hole you drill the right size for the grommet. I can't remember where I got mine. Silicone the grommet and you're good.
Good idea, that's what I'll pry do! I guess there enough holes on the top of the cab that don't let water in i don't know why I couldn't do 1 more♂️