Since our motorhome days and now 5th, I too have been looking into a rear camera. The three supplier/installers I have talked to indicated to not go with wireless. They stated it is less reliable, not as high resolution, and some don't have the night vision working very well. I think I can do like the dealers do with on the roof surface wiring, and simply put large globs of Dicor to hold wires in place- down the fridge vent and then fish wires forward to hitch area. I'd really like to hear some recommendations of good working wireless cameras, as well as make and model.
2000 Bounder. 2000 Vanguard 17' boat, 5 dogs, 2 cats, 2 miniature ponies, 1 horse, Massey MF65, 2013 Kia Sorrento, 2005 GMC Jimmy- 1 longtime patient wife(53 yrs)