Rick........
1) I took the rear access panel off then I used my dremel to enlarge the access hole to the plugs but I did not remove the TV to do it.
2) The black flush will operate anytime you have your freshwater hose hooked up to it and the water is on. After I dump my black tank I then close the valve and turn the flush on to refill the tank again before I start the flush process....
3) Your thermostat has 3 settings. I think the fan is the top one. The fan can be set to always on or automatic so that it comes on and off with the AC compressor,
4) cant help ya on the SAT.....