We have the same switch box, have the remote, but are now trying to locate the infrared receivers/transmitters to allow the remote control to work with each of the TVs in the coach. I've been on the phone with Joe, a Tech at RiverPark, who gave me the information on their website with wiring schematics. Perhaps you've already solved your problem, but I thought I'd give you the link, just in case you haven't.

[Link: riverparkinc.com]

I suppose I'll have to purchase new ones if we can't locate them.