I apologize for the late response... I've been traveling like crazy between work and leisure. Converting over to 12V headlight system is relatively easy. But, first make sure the vehicle is converted to a 12V system. I converted the entire car over to 12V from 6V using information from http://www.oldengine.org/unfaq/six12.htm. Once the car was converted, changing out the headlights was easy. I bought a kit from chevsofthe40s.com and followed the instructions. I did have to modify the reflector backs to fit the bulbs. I also got instructions on wiring from the Internet to wire up the lights using relays(http://www.humanspeakers.com/audi/headlight-simple.htm). Using relays helps balance the load to the high output bulbs and may save you from burning things out. Hope this helps.