1974 Volkswagen Campmobile Base 1.8L

I am the fourth owner of this 1974 Volkswagen Campmobile,the owner before me had completed a partial restoration for around $10k. Every thing is operational withthe exception of the wipers and heater. They were both working and I believe there is a simple wiring issue that needs chased and repaired. This is a 4 speed manual, air cooled 1800cc, with dual carbs, the motor has about 18,000 miles on it. Has fairly new tires with lots of tread left and a brand new deep cycle battery. The interior includes a rear seat that pulls out into a bed, a closet, other storage compartments, a fridge that has been converted to a simple cooler asthe compressor had quit working, there are also full curtains all the way around, with roll out louvered windows inthe back and an additional wing window, a screen for the back door and a gear hammock forthe front of the cabin. There is 110v power inside, hardwood floors, a 4 speaker CD player/radio, there is also a bench and pull out table. The outside includes a rare roof rack andfront mounted spare tire. I also have a couple of service manuals and some random spare parts. I will try to answer any questions as quickly as possible. Thanks for looking!