Posted by bstover7@hotmail.com on January 08, 2018 at 08:42:41 from (162.212.64.171):
Hello all. I just purchased a 1965 JD 3020 diesel standard. SN 79669. It starts fine and came with new batteries. It still has a 24v starter and has a generator. The lights are not working, but have been tested to be alright. I started looking closer and it has 2 batteries in series, but the left is a 6volt and the right is a 12volt. I think someone screwed up in their purchasing. There is no positive or negative grounds which I believe to be the issue with the lights, as there is no 12volt system.
My questions are: do I need both a positive ground on the left battery and a negative ground on the right battery? Should I put a fuse in this system, and where?
I am planning on replacing the 6volt battery with a 12volt.
Also, which is the proper way to put these in series of the 2 photos attached.
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