[dmsfrr]

Diagram #1. Starter solenoid wiring...
but there are a few exceptions based on where the battery, starter solenoid and starter are mounted in relation to each other.

When I first looked under the hood of a '55/'57 T-Bird I noticed the 'Battery' and 'Starter' cables are connected to the opposite terminals. (diagram #2)
Some other vehicles may be connected this way also. It makes no difference in the operation of the solenoid. The 'S' and 'I' wires however, must be connected correctly.

Connecting battery or ignition switch power to the 'S' terminal should energize the solenoid with a quick solid click, and it should release the same way. When energized the solenoid should supply 12 volts on the Starter and Ignition terminals. When not energized the solenoid will only have power on the 'Battery' terminal.

just FYI: Original 6 volt positive ground '55 Fords use a different style starter solenoid with only 3 terminals. (image #3)
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