gail brigham said: (quoted from post at 07:48:41 05/28/10) I recently changed plugs, wires, points, coil, etc on my Ford 800 and when I changed the coil out it was a 6-volt , not a 12 volt coil. The tractor had been running but would lose power when it got hot and someone on the YT discussion forum suggested among other things that the coil be changed. In fact, the old coil was corroded mightily inside the connection where the coil wire goes to the distributor but everything still worked. Okay, my question is: Should I go back with a new 6-volt coil? It won"t start with the new 12 volt coil for whatever reason. Thanks again to whomever replies.
All ignition coils are 6 volt. Some of them have an internal resistor which allows them to be used on a 12 volt system, and others require an external resistor if they will be used on a 12 volt system.
If your coil is labeled for 12 volts, it DOES have an internal resistor, and if your tractor is a 6 volt system that coil will NOT work.
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