Ford 9N tractors were made from 1939 until 1952, and they are commonly collected and used as vintage and antique tractors, as are other tractors in the Ford N series. Because the original Ford 9N electrical system runs on a 6-volt generator, that’s the maximum amount of power you can give the tractor. In order to get an old tractor working you have to wire the 6-volt generator to the tractor’s voltage regulator.
Put on the gloves and remove the positive and negative battery cables from the battery.
Unscrew the field terminal nut from the generator with the socket wrench. Place the regulator’s field wire over the field terminal and screw the nut in place over it.
Remove the nut from the generator’s armature terminal and place the regulator’s armature wire over it. Screw the nut over the wire.
Remove the ground terminal nut from the generator with the socket wrench. Fit the ground wire over the generator and tighten it in place with the nut.
Clip the positive cable to the positive side of the battery and the negative cable to the negative side of the battery. The positive and negative sides of the battery will be marked with plus and minus signs.
Attach the jump wire to the field terminal and lightly touch the positive side of the battery with the voltage regulator. Remove the jump wire after two seconds.