Re: 58′ Sea King 25hp Starter

[Anonymous]

Many (but not all) boat solenoids have two small posts (for the start switch circuit) and two large posts for the starter circuit. Some (like your 6v system) might only have one small post, for the ground.

The "small posts" on the the solenoid goes to a coil, which should have a low resistance (a few ohms).
On a "big twin" (25hp and up), one side typically goes to the "safety" switch on the motor (ground), the other side goes to the start switch (hot).

I’m sure someone will post the correct diagram for your motor, which will make more sense 🙂