9n were made from 1939 thru 1941 with 2n as model year 1942 thru 1946, 8n started with model year 47 and continued thru 52.
you could get a frontmount N in an early 8n, and 9n/2n were only front mount.
you MAY have a 1950 8n chassis with a 9n engine.. but it is not a 1950 9n.. etc.
that said.
you did a 12v conversion.. it should have an oem resistor on the back of the dash. if the kit provider also gave you a 2.5 ohm '12v' square coil, then you can run that coil with the oem ballast resistor and be fine. The additional ceramic resistor would be used with the oem ballast resistor if you were keeping the oem 1ish ohm '6v' coil.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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