The oil pressure switch (from NAPA) will turn on when there is oil pressure, and off when there is none. (normally open switch with 1/8" pipe threads) Putting a short nipple into the block, and a T on that, the oil pressure gauge can be supplied from one port of the T and the switch can be screwed into the other. The switch is connected to the starter switch on wire from the battery (big terminal end loop needed to fit the stud, small (blue colored insulator on the wire crimp) the other terminal of the Switch connects to #1 terminal of the alt. I chose not to use the diode because the diode would allow continuous flow from the battery to the alternator trying to excite it when the tractor is shut off. The diode is used when there is a distributor ignition, and the ignition switch supplies exciter current control. Without the diode, the alternator will supply voltage to the coil (through the ignition switch terminal, and keep the tractor running). I hope this helps. Jim
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Today's Featured Article - Harvestin Corn in Southern Wisconsin: The Early Years - by Pat Browning. In this area of Wisconsin, most crops are raised to support livestock production or dairy herds in various forms. Corn products were harvested for grain, and for ensilage (we always just called it 'silage'). Silo Filling Time On dairy farms back in the 30's and into the first half of the 40's, making of corn silage was done with horses pulling a corn binder producing tied bundles of fresh, sweet-smelling corn plants, nice green leaves with ear; the
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