@chefchris hey there! i know this is an old post, but just got a 1648 jon myself. i've been trying to how to run wires from front to back, when i came across your post here. you say "super well built it only has a 1.5" square tube running front to back to run wires,". what is this 1.5" square tube you're speaking of? where is it? is it something official with the grizzly for running wires? i ask because i've seen a couple posts/videos where people have fished wires through the bottom of the boat, but that's below the bilge line. what you're referencing sounds like it'd be above the bilge line, which i'd much prefer.
anyway, if you wouldn't mind sharing what you know about it, i'd really appreciate it! thx!