Looks good. I ran the wires to our disc mod to the pin box junction box as well. That box was so full of wires and wire nuts that I added a 1" extension ring (Home Depot). Wire fishing was probably the hardest part of the job.
It amazes me that RV manufacturers leave such a bunch of dangly visible wiring. Ours wasn't as bad as yours and several others have pictured - that is until I looked behind the basement bulkhead, Lots of wire ties and a few cable clamps reduced that tangle somewhat
Traveling with my DW Susan, a couple poodlepups and our 2014 Montana High Country 343RL, being towed by a 6.7 2011 F250 CCLB using a B&W hitch and OEM puck system