A while back I bought a 1968 John Deere 3020 tractor. After having some issues with the starting and charging system I decided to switch it over to a 12v system.
I made a comple instructable on the conversion over at instructables. Again this was done a while ago but I figured I should put it on my website. You can view the complete instructable HERE.
And here is the video series dedicated to the conversion.
And of course, in the image and video is the cat tax.