Thanks for the pics. That helps a bunch as I plan on working on this over the weekend. I know what you mean with the seat and getting photos there. I was going to start working on the under-the-seat stuff last night but couldn't get the seat unbolted. Found that they have some huge torx bolts on...
Installing mine now on 25 XLT Maverick Hybrid. Roadmaster base plate now installed with diode brake light kit and Invisibrake next. Looks like you are using the Nighthawk tow bar which I'm using too. Seems to be basically identical installs. Any pics for the Invibrake in your install would be...