emergency kill switch wiring diagram.

17rogue70

Petty Officer 3rd Class
Joined
Feb 21, 2010
Messages
93
need a diagram for wiring up a kill switch to my 1987 mercury xr2 150hp. . switch is a 4 prong seachoice . top and bottom prongs are labeled letter c and the sides are labeled m. or visa versa. new install ,came w/o insrtuctions




thanks in advance
mike
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,931
Re: emergency kill switch wiring diagram.

Take a meter and measure between C&C and with tether cord installed it should read open and this is correct. To wire into circuit attach a wire from a known ground to one side and other side your blk/yellow. When it is activated it will ground out the ignition just like turning key off...
 

17rogue70

Petty Officer 3rd Class
Joined
Feb 21, 2010
Messages
93
Re: emergency kill switch wiring diagram.

thanks a million bullet. thats what i needed
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: emergency kill switch wiring diagram.

Shouldn't he be using the two "M" terminals since this is a magneto engine. The switch is a universal variety (for magneto and battery ignition systems.). A battery ignition system requires a "closed" circuit for the engine to run (the "C" stands for coil). A magneto engine requires an open circuit to run (hence the "M" designation.) The two sysems operate opposite of each other. Regardless, if you use the "C" terminals and the engine doesn't start, pull the clip. It should then start. If that's the case, use the "M" terminals.
 

17rogue70

Petty Officer 3rd Class
Joined
Feb 21, 2010
Messages
93
Re: emergency kill switch wiring diagram.

i guess the the next question would be , do i run a ground to 1 side and the black yellow to the other leaveing the black and yellow to the ignition side dead end as long as the blk/yell harness side is attached to the kill switch side ? correct? i dont want to burn ANYTHING to the ground so to speak. or fry anything in the process


thanks for the responses
mike
 

17rogue70

Petty Officer 3rd Class
Joined
Feb 21, 2010
Messages
93
Re: emergency kill switch wiring diagram.

just so guys know , i got done and works flawless. had to use the c terminals. thanks a million , you saved my bacon
 
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