It would appear someone has installed a non-standard starter switch, NOT GOOD, as the neutral start safety feature would be lost. The small terminal on the correct OEM-type solenoid would be connected to the the single terminal on the tranny-top safety starter switch. Did you get the correct starter solenoid for this application, or a "generic Ford fender-mount solenoid" from an auto supply? These solenoids get confusing, 'cause they take a generic case, marked "I" (ignition) and "S" (start), and for certain applications, the internal connections change, without the markings molded into the case being changed along with the oldball inards of the solenoid. If you have the typical "generic Ford fender-mount solenoid, and a non-standard starter switch, the lead from the switch would connect to the "S" terminal. The "I" (IG) terminal is used to bypass the ballast resistor during cranking, on units set up to make use of that feature. There is still another type of solenoid, called a "four-terminal isolated base solenoid" where the two leads from the solenoid coil are brought out on the "I" and "R" posts, requiring still another wiring diagram. So, what is the make and part # of the solenoid you used as a replacement? (All that being said, there have been a number of reports on here about new-out-of the-box solenoids being defective, and always "ON".)
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