Not knowing what type of TV you have, CRT or Flat Panel, I'm not sure my idea is best, but if you have 2 Flat Panels with an RF input and a HDMI (or two) inputs each, I would suggest running a new RG6 cable from the dish connection in a compartment or your roof to a HDMI splitter and then HDMI cables to the TV sets.
The flat panel or LED TVs have an input selection feature in setup or menu and you don't need to run the satellite signal through anything but the splitter.
I bought one(splitter) from ebay for less than $10 to allow me to show the same BluRay movie on both TVs. I bought a 45 foot, high grate HDMI cable for about $15 on ebay to run from the splitter to the rear TV.
Leave the BOMB and RF inputs as they are.
And no unfortunately I don't have a schematic but I'm sure one is available on the net.