kill switch wiring

[stul]

hi
Can anyone confirm that a kill switch(man over board type)is wired to short the engine to earth?
I am fitting a 1985 mariner 40hp to boat but do not know which wires to connect it too ,any help appricated
stul

[fast fred]

not sure what color wire it is on that, but yes, switch boxs is ground out
and kills the spark.

[roaisland]

My Suzuki is wired to earth to kill the engine, and I'm sure your Mariner will be too, It shouldn't be too difficult to play around with the wires until you get it right.

[AndrewH]

Yeah so are Yamahas from the same period (mid 80s).

[Paul F]

On merc/marin it is normally wired 1 to earth and other conects up to black/yellow wire which is the stop circuit
Paul