Thanks to Tom Cherry for all the info and wiring diagrams.
Solution was not perfect, but got the mirrors working again.
As Tom said, Fuse 51 feeds TWO items--Mirror directional control switch AND "Driver side reading light". In the case of this 2011 Camelot, there is some sort of direct-to-ground short in the reading light circuitry. WHETHER OR NOT the multi-pin connector is plugged into the mirror control switch, as soon as a fuse is plugged into the Fuse 51 slot, it instantly blows.
BTW, Tom Moore's coach does not have the normal gooseneck map light like many coaches. His "reading light" is a puck light directly over the driver's seat. There is an identical puck light over Paula's chair (also called a "reading light"), but it is controlled by a rocker switch and works perfectly. (I joked with Tom, "You don't need a map light. You have the most fabulous navigator in the world in the passenger seat. Paula is absolutely AMAZING at navigating, determining which fuel stations have enough turnaround room, where is cheapest fuel, what campgrounds have the best looking lots, can make reservations on the fly...AMAZING NAVIGATOR!!!!)
But I digress. I removed the "driver's reading light" (the puck light over the driver's seat). LED bulb was OK. Fixture was OK. Both connections ohmed out correctly. I was running out of time, because Tom and Paula had to leave early tomorrow morning. I ended up cutting the "Battery" wire (nicely marked on the wire by Monaco) going TO the multi-pin plug that connects to the mirror control switch and terminating it with fully insulated connector, so it could not short out against anything. To the other end of the "Battery" wire (coming FROM the connector that plugged into the mirror control switch), I connected to a fused wire attached directly to the "chassis" lug on the printed circuit board in the front run bay. So, essentially, I added a SEPARATE +12VDC feed to the mirror control switch that is ALWAYS ON, and not controlled by the ignition switch, but on a fused circuit, and NOT feeding the "driver side reading light".
Yeah, that was the "slacker's way out", but I did not think I could find the short in the "driver's reading light" quickly enough to let Tom and Paula leave on schedule early the next morning...and controlling the mirrors was much more important than the "driver side reading light". Maybe one day I'll search out the short, but for now, the #51 fuse slot has NO fuse installed, and the mirror control switch is fed +12VDC from a separate fused line.
As always, thanks for the extremely rapid response to a Monacoer in need (Tom Cherry actually called me on the phone to give me extra info, then emailed me diagrams I did not have). IRV2 is a great resource...but it pales in comparison to the help you can get from fellow Monacoers for a Monaco-specific problem. "Bill D's Monacoers" is the BOSS for all things Monaco. Thank you Dave Pratt and Scotty Hutto. You guys keep this site priceless. And thanks to Tom Cherry for the personal attention.
