It is prewired...but you will not find a diagram anywhere. They change things so fast that I'm sure they can't keep up with things.
I picked up our 26DBH in June, and since then, they've changed all the indoor lighting to LED Puck Lighting, Added an outdoor kitchen, which totally changed the way the pipes, electrical and heat run under the sink, added a skylight to main living area, added a tv mount backing to ceiling of the bedroom, added an LED strip under the stairs......all since June.
2016 Grey Wolf 26DBH following a 2014 RAM 1500 Outdoorsman
Life is good...Live it!
(2014) Nights Camped - 16 in 6 trips (2015) Nights Camped - 20 in 6 trips
(2016) Nights Camped - 21 in 7 trips