Posted by Janicholson on February 24, 2022 at 19:26:39 from (24.240.46.228):
In Reply to: update on the farmall H posted by Nemesismotors13 on February 24, 2022 at 17:50:21:
All's well except the kill switch to the mag. The mag is completely separate from all electricity. So in place of the location you have the wire to the mag from the ignition switch you need to erase that entire dangling thing from the drawing. The ignition switch grounds the mag when pushed in, no power there at all, and cannot be. In place of that (and the light as well) you can use a NAPA oil pressure switch that closes when it has oil pressure. It will have 2 terminals. attach one terminal to the ammeter as shown in your diagram, and the other to the #1 terminal on the alt. When the engine starts, the oil pressure comes up and the alt turns on. There is no need for a light there with a Mag. When the engine stops (because the mag is grounded through the ignition kill button as it is now) the oil pressure goes to zero and the alt stops charging. Jim
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