Install Kill Switch?

gkaczmarskyj

Recruit
Joined
Jul 19, 2010
Messages
4
Does anyone know if there is a kit (OEM or aftermarket) or technique to add a safety/kill/deadman's switch to a '78 Johnson 140HP on my 17' bass boat? It dawned on me today as I was WOT alone that it would be a good idea to have one. Thanks.
 

seabob4

Lieutenant Commander
Joined
Jun 10, 2008
Messages
1,603
Re: Install Kill Switch?

Your Johnson shuts down the motor by grounding the coils. Wire in a kill switch (Normally open) that will apply a ground to the coils when pulled. The ignition switch will open the ground loop when you are running, simply introduce the ground back in with the kill switch...
 

Fireman431

Rear Admiral
Joined
Sep 17, 2007
Messages
4,292
Re: Install Kill Switch?

There is also an aftermarket kill switch that has the ignition wire from the key run to it.

It is in normally closed loop mode with the cord intact and when removed, it opens the circuit, killing the engine. It's available online.
 

dave11

Lieutenant Junior Grade
Joined
Dec 2, 2007
Messages
1,195
Re: Install Kill Switch?

I am out a lot by myself on my boat. I never wore the lanyard. I bought an AUTOTETHER. It is a wireless lanyard. I actually use it.
 
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