This is the
Owners Manual that you will receive from Newmar.
At the last pages will be fuse panel information and general wiring info and plumbing info.
Most of the wiring in my coach and previous ones I have owned have printing on wires to indicate what its for and where it goes.
If you open up the access panel to your over head fans you may find most of the wiring from dash and over head lights,running lights in front cap,speakers, switch's etc,etc.
This
brochure does not show dash in front of drivers seat but I have a panel on upper dash that can be removed to access fuse panels and other items on the main dash.
You can drop the dash panels off dash by removing screws holding the panels to dash structure and gain access to the switch's that maybe giving you a problem.
You may be able to correct the operation by using some contact spray into switch before replacing if need be.
Your head light switch has a dimmer pot to increase or decrease the lights on your dash switch's. Newer coach's may have a wheel pot mounted on dash panel to left side.
Most wiring or plumbing sheets supplied by Newmar are what you will see at end of Owners Manual.