Editing Remote Ford solenoid for GM- no hot start (section)
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===Original GM wiring configuration=== The battery wire to the solenoid in the stock configuration is hot at all times. The sequence of events that happens in the standard GM when you hit the starter is as follows; #The electricity has to go from the starter switch through the loom to the neutral safety switch. #If you are in park (or neutral) the electricity then goes through the loom to the stock solenoid "S" terminal. #When the "S" terminal goes hot, it energizes the solenoid. This causes the plunger to throw the starter gear out to the ring gear (flywheel). It also closes an internal set of contacts that sends electricity to the starter motor and also to the "I" terminal. #The starter motor doesn't get power until the solenoid contacts are closed. The wire from the "I" terminal is a ballast resistor bypass for the coil. It gives full battery voltage to the coil during cranking. Here is where a problem is encountered. It takes a fair amount of current to energize the stock solenoid when hot. Due to the amount of resistance in the wiring and starter motor from heat soak, the battery may not be able to supply the required current to the starter through the stock solenoid and wiring. This is where the Ford solenoid comes into play.
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