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.
Stan
2008 Bounder
38P, W24, 8.1L, 3 Slides
2019 tow dolly hydraulic brakes