http://www.classictruckshop.com/12volt.asp http://www.oldengine.org/unfaq/six12.htm http://www.gsdi.org:8088/Tech/6-12v/6-12-6.html http://users.sgi.net/%7Edsollon/12volt.htm (Hudson tips) http://www.film.queensu.ca/CJ3B/Tech/SixVolt.html (Jeep) http://www.imperialclub.com/Repair/Electrical/convert.htm (Imperials) http://www.yesterdaystractors.com/articles/artint8.htm (tractors)