How do I find out if my starter is 6V or 12V? My tractor was converted to 12V operation when I got it. Long story short, the original 1941 9N block had serious problems, so I bought a good condition 1949 8N block and a friend helped me reassemble it this past weekend. We tried to get it to turn over (without actually cranking, as that stuff isn't hooked up yet), and the starter was arcing and shorting several times. I'm wondering if it's the original starter and this was just never changed out, or if the starter just has an internal short and it's time for a new one. Darn near everything else related to the engine is new at this point, anyways.