Winegard satellite dish RM-DM46

If your RM-DM installation is like most, the coax is routed from the LNB at the dish down through the roof at a cable entry cover that's held in place with several screws and coated with sealer. It's a bit of work, but removing the screws and clearing away the sealer to lift the cover should allow you to run a new coax from the dish to the receiver in one piece. Adding any splices in between will degrade the signal a few dB for each one.

Thanks Dutch, that is my first choice and waiting on info from somebody like you. I'm giving this project time so I can gather all the info that's out there before I start. I'm going to talk to Winegard again and Fleetwood only because I always hesitate doing anything to the roof.

Take a look on the roof at exactly where the cable entry plate is located. Using that location, see if you can translate that into where it might be at the same location inside the coach. If it is near a light fixture, a ceiling speaker, the front cap or a side cabinet you might be able to find the coax on the inside as well or see the run the coax makes. If this is a factory installation is may not be as easy and the run my not be accessible. However, if necessary, you can run a new coax from the antenna, leave the same kind of loop on the roof that's available now to allow rotation, and then run the coax across the roof to any convenient location that allows access to your satellite receiver. This can also be done to add a 2nd coax for a 2nd receiver. Just run the cable as necessary across the roof and use a new cable entry plate to seal up the entry location. You will then want to secure the coax to the roof and this can be done with a dab of Dicor under and over the coax every 6 inches or so along the length of the coax.

I thought I should come back and post the outcome in case someone has the same problem.

First the schematic from Fleetwood showed a fitting right below the Plate and there wasn't one. Then I called Winegard back and asked if I would harm the integrity of the harness if I spliced in one and there answer was not at all. So I decided to cut the old and add a fitting and then a new cable to the satellite dish.

Results, the dish actually has 2 fittings so I ran an external cable down thru the window found the direct tv satellite and the spliced reception was identical to the one down thru the window.