Two answers.. First: There are two different types of switches.. one is a wall plate (Well 3 now that I think of it two are wall plates) one is a box of many buttons.
But if you had teh BOMB I do not think you would be asking (I have both).
The wall plates Type 1 (Standard) has a 12 volt outlet, a switch a LIGHT and an antenna connector.. So,, when it is "DIM" in the motor home.... LOOK FOR THE LIGHT.
Type 2 has 3 buttons, two digital displays and a column of LED's,, Alas it will be dark less you tap a button Both are the size of a standard wall plate.
AND.. This assumes no-one has re-tasked the park cable for Sat TV (A common practice)
The first (Standard) wall plate will be near one of the TV's. often right next to it. USUALLY the main TV is hooked to it.
The advanced (Sensar Pro) Plate will be in the same place but all connections are on the backside.
FACT. Trying to get cable to work in one puchased used Fleetwood product we found the idiots who used to own it had completly UNWIRED the wall plate and we could not even find the wires,, The plate was a dummy, only 12 volt leads no coax at all connected to it.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times