Ordered my factory manual from ebay, about $25. Contains wiring diagrams, and all maint info for the vehicle. Most likelt, the camper will be hit and miss. Rarely any schematics. Ask questions, I have evtensively updated my 1973 Dodge Cayo class C
You can get the batterys at walmart about 220 for both as far as manuals you need a 72 dodge van book for the truck part if the fridge is still in it you can have it rebuilt for about 600 try to find a used oven and stove the ac is about 600 if you install your self I used to have 72 my self that I restored
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