Join Date: Mar 2006
My Motorhome: Chausson Welcome 85 2007
Thanked 91 Times in 87 Posts
There is a new(ish) type of reversing sensor on the market now.
Its just a self-adhesive ariel that is fixed out of sight behind the bumper. A lead connects it to a small control box which can be sited in a locker.
I have fitted one, takes about an hour and no drilling.
Non plaudite. Modo pecuniam jacite