A bit more info on how the wiring is expected to be laid out may help?
Check on these as they are for your year, make, model ,etc of RV:
Everything from 110 to 12 volt is in this group but way down at the bottom may be the most usefull for TV!
The first is a pretty generic set of drawings for each Rv and then one has to go down the group of drawings and locate which best fits the options you have like cable box, inside TV, outside TV, etc. That group gives a kind of "baseline" setup for RV from a simple rooftop to one with VCR and all kinds of other things added.
Then the second item at the bottom on this list is more of the physical layout of where the wires are run and more specific to your RV.
More what you expect to have and less of the "general idea" that anybody might have?
This second set may have some handy info on sorting which coax goes where as there is a code with tape at the coax ends on many of the coax and this drawing can show which colored tape should go where! This second set also can show where to find things like splitters where coax may come in on a single and branch to more than one going out. Like a TEE in a water line? Handy to find which cabinet they may have hidden it in, under, or beside!
Click this snip or go direct for more info!