Not a Boondock or a 2021, but for what it's worth here's a Reese friction sway ball mount on a 2020 320S. Even with the basket mounted directly on the frame there are no clearance problems. (View Post)
HDMI switch to go between the Jensen DVD and Firestick. The box at the top strips out the audio to feed a small sound bar. Also a 12V to 5V converter (bottom left) to power the Firestick and sound ba… (View Post)
@lkc001 ... The sheet of polypropylene that I used was kicking around my garage for probably 20 years. No idea where it came from originally, but I'd guess it was one of the plastic supply houses. I … (View Post)
If you don’t have a meter, any 12v device with leads (a light is best) can be used to test polarity. Connect it between one of the wires in question and a ground (frame). If the device works, it’s th… (View Post)