Looks great!
I would suggest 2 things. 1) find an alternative to the 3M zip tie anchors. Even with epoxy, they tend to only last through a season or two. After while, you'll have a harness with unstuck squares attached to it. Could just be regional as my area will go from the 30's to triple digits year round. The heat is usually the killer. And 2) it might be extra work, but try to run your always hot large cables where things can't fall on them or where rocks and road debris can't hit them. Dropping an AC compressor or an alternator, or even letting the auxiliary battery hot wire get pinched between the cab and frame, creates quite a mess that usually involves replacing all body grounds, a parking brake cable and other hidden items that let the smoke out. Sad to say, I've had to make those repairs more than once in my lifetime.
