I assume that there is an aluminum bracket that the headlight housing screws into. And the bracket screws into the fiberglass "cap" (nose). So, you will have to bring the RV up on blocks or properly rated jack stands so you can shimmy under the nose and look how it's all mounted. Just remove the electrical connections, unscrew the self tapper screws and remove the housing / bracket.
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)