Which wall can support?
All of them, BUT.. You need to find the studs and lag into them
Most RV walls have nice solid studs, may be wood or metal depending on RV, which can hold a whole lot, and nice paper thing panelling between the studs which woudl be hard pressed to hold anything.
So find the stud.
I'm about to do that in a house Need to swing a chandler (We are all done with the FanDangle, now it's the light dangle) Step one (Buy hardware) finished,, Sept two Find stud, Step 3 drill pilot hole to insure in stud,, Screw up hook, hand chandler, Plug in to existing lamp socket using adapter.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times