Thanks for your help. My husband took the VW to a local guy today and he suggested that he look for a cut wire.He said the alternator wasn't charging the battery. My husband checked the wiring and found that a wire was cut. Should have been going to the battery but the guy who had the VW before us must have had it connected to the house batteries when he was fixing it up as a camper.
Now things are fixed, no more light,no more stress for my husband. Thanksagain for your suggestions.