When you need to wire a new solenoid into your Johnson outboard motor's ignition system, hold the solenoid in your hand so that the two small terminals are facing you. The small threaded terminal to the left is for the wire from the starter; the small terminal to the right is for the starter. The large threaded terminal to the left is for the battery; the large threaded connection to the right connects to the starter.
Items you will need
Adjustable wrench
Adjust the jaws of your adjustable wrench to fit the nut on the large terminal on the left side of the solenoid. Remove the nut. Set the ring terminal of the red battery cable over the terminal and thread the nut onto the terminal. Tighten the nut snugly with an adjustable wrench.
Take the nut off the large terminal on the right side of the solenoid. Set the ring terminal of the yellow and red wire from the starter over the terminal and thread the nut onto the terminal. Tighten the nut snugly with an adjustable wrench.
Loosen and remove the nut from the small terminal on the left side of the solenoid. Set the ring terminal of the wire from the starter over the terminal and thread the nut onto the terminal. Tighten the nut snugly with an adjustable wrench.
Remove the nut from the small terminal on the right side of the solenoid. Set the ring terminal of the black ground wire from the frame of the starter assembly over the terminal and thread the nut onto the terminal. Tighten the nut snugly with an adjustable wrench.