Newbie , '89 Dodge Xplorer, no manual, help!

On some of the other Xplorer van campers, the 12 volt converter is mounted in the rear compartment on the drivers side. Some are also mounted under the bed next to that rear compartment. The converter is plugged into a 120 volt power outlet flush mounted nearby. When plugged into shore power, that converter box will be humming. If not, probably the first place to check is the AC breaker panel located in the cabinet directly above the closet. Might be a good idea to first check to see if you're getting any power to any of the 120 volt outlets. If I remember correctly, there is only one 120 volt circuit with the first outlet in the string being GFI protected.

karl