If you have the 7-pin heavy duty connector, you need to make sure the brake controller is on the center pin and not the 5 o'clock position like the 7-way RV standard. The 7-pin and the 7-blade have different locations for functions, that your adapter takes into account. You will want to add the P2 # 90885 output to the correct location. I've attached a photo to assist. view full answer...
If you removed a wheelchair lift and then your Atwood Air Command Rooftop RV Air Conditioner w/ Heat Pump - 15,000 Btu - Ducted - White Item # AT15028-22 stopped working I'd say it was either wired into the lift somehow or the wire running from it was somehow damaged during removal of the lift wiring. I would start by tracing the wiring from the unit to and looking for and bends, damage, or lose connections. You can also rerun the wiring from the unit to a dedicated 20amp circuit using... view full answer...