[JSeery]

This is how it is wired internally. Terminals 1 & 3 are the large ones on each side, terminal 2 is the smaller one in the center. If the solenoid is disconnected, there should be no continuity between 1 & 3 or between either 1 or 3 and the mount. There should be continuity between 2 & 3. Terminal 2 is the connection to the starter button. The solenoid must be wired such that the Battery is connected to the large terminal that is internally connected to the Starter Button terminal.

With power connected to terminal 3, you should hear the solenoid click when terminal 2 is grounded. If the Starter is connected to terminal 1, it should engage when terminal 2 is grounded.