My daughter just bought a 1980 vanagon camper with the air cooled eng, 4 speed trans., seems in very good condition. main problem so far is headlights work on high beam but not low beam. Yes I changed the headlights. checked fuses also.Van is also wired for second battery under drivers seat, not sure what type we should use tho, deep cycle would seem ideal for camping purposes which is what she plans on using the van for. Any help, thoughts would be greatly appreciated.