Igntion Switch Replacement Wiring

[timmeraw]

I recently picked up a nice 1988 Mariner 60hp( 3-cyl). It came with controls but the key cyl was damaged and there was no key. I picked up a replacement ignition switch (Sierra MP41080). I attempted to wire it into the controls but did something wrong as it blew the inline fuse on the red wire. (the original switch had no markings for B S M A etc.)

Can someone tell me which of the 6 posts the following current wires should connect to?:

Wires going to original switch's 6 posts:

1 - Gray I think?
1 - Yellow/Red
1- Yellow/Black
1- Red
2- Black/Yellow
2- Purple

On the new switch there are the following 6 terminals: (please match the above colors for me)

M-
B-
A-
S-
I-
C-

Thanks for any help you can provide.
Tim

 

[Chris1956]

Re: Igntion Switch Replacement Wiring

You have left out ground which is black. Your ign switch will need to have it somewhere so it can ground out the ignition wire (black/yellow). Red is battery and goes to B; yellow/red is solenoid and goes to S; yellow/black is choke and goes to C; grey is tach signal, with no connection to the ign switch; Purple is accessory and goes to A;

 

[timmeraw]

Re: Igntion Switch Replacement Wiring

Thanks Chris. There are two "M" connections on this switch. The first is a screw/post which I have connected the two blck/yellow's to and the other "M" is not a terminal but a female tapped hole where I assume a screw is used? Do I need to ground to the control box from this screw? I wonder if one of the two blck/yellow's is ground to control box...can't really tell? If it wasn't grounded I suspect that this may have been the reason for the blown fuse?

 

[Chris1956]

Re: Igntion Switch Replacement Wiring

Sounds like the proper place to connect the ground. Normally the ground will be solid black, however, I am not familar with your particular motor.