Go to the heavy side of the camper, typically the side with the kitchen and bathroom. Mount one set of brackets under the front under-side of the camper portion of the truck cab-over-camper. Align the mount so the jack face -- where the jack bolts to the bracket -- is facing out and there is just enough clearance for the jack to fit under the camper. Drill the bracket in position. Mount another bracket on the same side of the camper so it is parallel to the first, but as far to the rear under-side of the camper as possible.
Go to the opposite side of the camper and mount the last bracket in the middle under side of the camper, again with the mount facing out and just enough room for the jack to fit under the camper.
Park the camper and set the emergency brake. Insert the jacks into the mounting brackets and push the lock pins through the jacks' mounting holes.
Turn the hand cranks on the jacks clockwise to raise the truck camper and make it level. Make half turn adjustments and use the truck camper's internal level -- often found on the outside near the front of the camper -- until the truck camper is flat. Place wheel chocks under the camper tires and lock the jacks in the upright and level position.
