Posted by Owen Aaland on February 21, 2012 at 22:02:08 from (216.47.35.16):
In Reply to: 656 resistor posted by Jamie656 on February 21, 2012 at 14:38:30:
If it has a separate ignition resistor it will be located by the ignition coil.
During the production run of the 656 with generators there was a change in the wiring harness so that the resistor was built into the harness between the ignition switch and the starter solenoid.
Here is how to tell which system you have. There are two small terminals on the starter solenoid. The "S" terminal will have only one wire and that is the one that provides the power to engage the solenoid switch. The other terminal, marked with an "I", will have either one wire or there will be two wires crimped together in the connector. If it has only one wire you should have a separate resistor at the coil. That harness will also have two wire together at the coil. If it has two wires the resistor is built into the harness and you do not use another one at the coil. That is the later harness and will have only one wire at the coil end.
Tractors with alternators all had the resistor built into the harness for the ignition system but they had another resistor at the regulator for the charging system.
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