Pick a location on the roof of the pop up camper for the air conditioner. Make sure there are no wires or lights inside the unit below this area. Also place the air conditioner is at least eight inches from the edges of the roof.
Mark a square on the roof big enough to accommodate the connections between the roof and ceiling portions of the air conditioner and where the mounting bolts will go. Double check your measurements before cutting.
Drill a hole in each corner of the square. Starting with one hole saw out the square. Place the roof portion over the hole and secure with the mounting bolts.
Install the bolts from inside the pop up camper that hold the ceiling portion in place.
Apply the sealant between the roof and roof portion of the air conditioner. Connect the color-coded wires. Plug the ceiling portion of the air conditioner into the roof portion.
Turn on the power to the air conditioner. Turn on the air conditioner.