Help wiring 78 Johnson Ignition Switch

[chris_adler]

My kids lost my key and the lock has now been ruined trying to "crack" it. Arg. It's a 5 terminal I think that connects through the choke toggle button on the same panel. Has B, S, I, M and M contacts.

How does one replace this with a 3 or 4 terminal key? I'm not sure what each of the contacts means.

Help anyone?

 

[WillyBWright]

Re: Help wiring 78 Johnson Ignition Switch

You're talking about an automotive key switch? You won't be able to shut the motor off. That's the main difference between outboard switches and all the rest. The M terminals connect when the key is shut off which grounds-out the ignition system to shut it off.

Acccessory-purple
Battery-red or red/purple
Choke-purple/white
Start-yellow/red
Magneto-one black to ground, one yellow/black to kill
The first letters correspond to the letters on the switch.