Ronmar
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Yep, little guys are the coil and big guys are the contacts. If you follow the wires from the big contacts, one goes from where battery + connects to the solenoid and the other connects to the starter solenoid coil in. The aux start relay completes a circuit between these two points (applies 24V to start solenoid) when it is energized. #4 and #7 on this diagram.