Which model RV? It makes a difference on the answer you might get. (It helps a lot if you include a signature block on your posts so that you don't have to repeat routine stuff like what you're building.)
It's good form in general to use the search feature on this forum before posting a question, to see if it may have been asked and answered before. Not trying to give you a hard time, just a tip on making most efficient use of the forum.
