Just got back from Quality Bumper--they did a very nice job and made the installation look like it came from the factory by using protective black housing on all the wiring. They installed the brake controller bracket in the best spot they could find as low as possible on the dash so that the screw holes would not be visible should we ever decide to remove it. When the bracket is angled up all the way, I just barely brush against the controller box when I have my foot on the gas pedal, and the controller box comes out of the bracket when not in use, so then one doesn't notice it at all.
I got the higher-end brake controller (the P3) with a very user-friendly LED display for less than what the regular Prodigy goes for, because I saw a cheaper price online and asked them to match it, which they did, plus there's a $20 mail-in rebate on Tekonsha products right now. So for $40 more than the Nissan dealer was going to charge for just
the tow hitch receiver and 7 pin wiring, I got both, plus the brake controller and wiring and a ball and ball mount good for up to 5,000 lbs. by itself, so if we find a trailer that weighs no more than 5000 lbs, we can take it home with what we've got and add an Equalizer later!
I don't know what other Quality Bumper locations are like, but for anyone living in the Phoenix, AZ area, I am happy with Joe, Alex and technician Rich at the 12th Ave and Grand location. I asked a lot of questions particularly since I had read on several Nissan Frontier forums that aftermarket tow hitch and wiring installs could mean having some trailer running light
issues later, but these guys knew what they were doing and were polite, professional and patient. They plugged a test panel into the 7 pin receiver to make sure that everything was in working order, and they didn't mind letting me watch the installation, which helped me better understand where everything is located and how it works.
Thanks to everyone on this forum who provided guidance and input!