[scottz]

Assuming your unit is wired like mine (might be a questionable assumption) here is where the other wires go:

#4 red - Converter
vio - Bedroom Slide control
wht - Tank heaters
red with a 20A in line fuse - Cord reel
red - Level Up system
red - 12VDC from truck
(several red wires, you just have to figure them out)