Re: cb radiio
Steve, my son and I mounted a good radio in our Winnie. That was the end of the easy part. The underdash wiring etc. is solid. I did manage to get the speaker wires out to the doors and the tweeter wires up to the windshield posts, but it was tough.
I have my Garmin mounted on a Ram mount overhead. I had to pull the headliner down (the bottom of the bunk) to get the wires over to the door frame. I ran the external antenna coax down the passenger-side windshield post and into the front fender well.