Yeah that will work, it look's similar to the 60's Ford V8 starter solenoid. :thumbup:
Positive from battery goes to one large terminal, positive out to the starter motor off the other large terminal.
Momentary power in (from start button) will go to one of the smaller terminal's, (try the 2nd one if the first one you try doesn't work)
If you still can't get it to work, earth 1 of the smaller terminal post's and run the start button wire to the other.