Battery Connection
The Coleman campers are prewired from the factory for a battery to be installed.
The connection is the white plug on the trailer frame close to where the trailer lights enter the frame.
The BLUE wire in the same location is the electric brake wire that is prewired for brakes.
An Easy way to add a battery tray.
All you need is a battery, battery box, angle iron, some self tapping metal screws and a Camper Solutions Battery Harness.
Just cut the angle to the lengths to match the front and rear of the battery box and lay them out. Use a drill and predrill holes to mount the angle. Self tapping screws in the metal screw department of your local big box store will screw into your holes and hold the angle. Mount the box and install the battery with the camper solutions battery harness. You have battery power!