IH used two different types of resistors. The first style was the the ceramic block with a wire wound resistor. It should be located near the ignition coil. It will have one wire from the key switch on one side and two wires on the other side, one from the starter solenoid and the other going to the ignition coil. Later systems have a resistor wire between the key switch and the "I" terminal on the starter solenoid. Another wire will run from the "I" terminal to the ignition coil.
Looking at the solenoid can tell you which style you have. If you have a single wire on the "I" terminal you should also have resistor block. If the "I" terminal has two wires attached the resistor is built into the wiring harness.
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Today's Featured Article - Two-Brush Generators - by Chris Pratt. Whether for product liability or because the aftermarket parts and labor business is lucrative, this concept is disturbingly prevalent. Fortunately when you step into your shop and make that jump 50 years back in time to work with your old tractor, this concept goes out the window. Even so, when it comes to the charging system, people quickly revert to this idea and start replacing the major components one at a time until it works. The reason you don't find any decals in your replacement set wit
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