Stop switch location?

[Capt dave 258]

I have a 1988, 125hp Force outboard. Don't know any history on it, other then it sat for years. Had no key for the ignition switch when I bought it and purchased a new ignition switch online. Had it fire up briefly before I installed the new igniton by jumping the solenoid. On a side note, the boat was junk, so I disconnected all of the wires at the dash and pulled them back to the motor and hooked up the new ignition switch. Never had spark again. Read over forums and saw that I should disconnect the white wire for the stop switch, where it mounts to the wiring block. Did so and the motor started. I had to touch that white wire to it's terminal to shut off the motor. The other end of that white wire goes directly to a terminal on the back of the ignition switch, there is no stop switch in-between. A wiring diagram from Master Tech, shows some sort of stop switch, but I don't believe I have one. Doesn't the ignition switch act as the stop switch? I also see that there are 4 different ignition switches listed for this motor. Perhaps I bought the wrong one or have it wired wrong? There is no kill switch near the shift control handle. Any thoughts or ideas are appreciated.

 

[Nordin]

Ignition switch has stop function.
Key all the way to left and you stop the engine.
1988 125Hp and you should have the Prestolite ignition system with two CD modules.
Keyswitch has two M terminals, generally one of these M terminals is connected to ground and the other M terminal connected to ignition stop wire.
In the position all way to left the two M terminal are connected together.
Stop wire from Prestolite system is white or black/yellow.

 

[The Force power]

As Nordin already explained perfectly, I just want to add;
At NO time EVER should there be 12 reading/applied to the kill-circuit (white wire)

 

[Capt dave 258]

Ignition switch has stop function.
Key all the way to left and you stop the engine.
1988 125Hp and you should have the Prestolite ignition system with two CD modules.
Keyswitch has two M terminals, generally one of these M terminals is connected to ground and the other M terminal connected to ignition stop wire.
In the position all way to left the two M terminal are connected together.
Stop wire from Prestolite system is white or black/yellow.

The keyswitch does have two M terminals. One has a white wire that goes directly to the wiring terminal block on the engine marked Magneto. The other wire is blue and it also goes to a 2nd terminal block on the engine marked Magneto. If I'm understanding you correctly, I should have a second wire off of the M terminal on the ignition (the one with the white wire) and that one should go to ground so as to ground out the engine when the key is turned to off. Correct?

 

[Capt dave 258]

Reading your response closer, it looks as if the white wire that goes from the M terminal on the ignition switch directly to the Magneto terminal on the engine is correct, as it is the stop wire. I then have to add a ground wire to the other M on the ignition switch that has the blue wire on it? So basically what I stated above but the ground should go from the blue wire and not the white. I want to get this right so I don't ruin any other components and the boat starts and stops as it should. Thanks so much for your help.

As Nordin already explained perfectly, I just want to add;
At NO time EVER should there be 12 reading/applied to the kill-circuit (white wire)

Thank you for that info.

 

[Nordin]

The blue wire from the other M terminal at keyswitch should go back to the terminal strip at the engine and be connected at the second screw from bottom.
There should be a metal jumper between the second screw and the first screw from bottom at the strip and the first screw is for mounting the terminal strip to the block, soo it is ground.
If the jumper is gone connect the blue wire to first screw or make a jumper from a wire and connect between first and second screw.

 

[Capt dave 258]

The blue wire from the other M terminal at keyswitch should go back to the terminal strip at the engine and be connected at the second screw from bottom.
There should be a metal jumper between the second screw and the first screw from bottom at the strip and the first screw is for mounting the terminal strip to the block, soo it is ground.
If the jumper is gone connect the blue wire to first screw or make a jumper from a wire and connect between first and second screw.

The blue wire from the other M terminal at keyswitch should go back to the terminal strip at the engine and be connected at the second screw from bottom.
There should be a metal jumper between the second screw and the first screw from bottom at the strip and the first screw is for mounting the terminal strip to the block, soo it is ground.
If the jumper is gone connect the blue wire to first screw or make a jumper from a wire and connect between first and second screw.

 

[Capt dave 258]

The blue wire at the terminal strip is grounded as you described. At the back of the igntition switch, the blue wire is grounded when the key is in both the off position and on position. The white wire at the ignition switch is grounded when the key is in the off position but not the on position. When cranking the motor, the white wire is grounded, and I believe that is the issue as to why it won't start with that wire hooked up

 

[Capt dave 258]

The blue wire at the terminal strip is grounded as you described. At the back of the igntition switch, the blue wire is grounded when the key is in both the off position and on position. The white wire at the ignition switch is grounded when the key is in the off position but not the on position. When cranking the motor, the white wire is grounded, and I believe that is the issue as to why it won't start with that wire hooked up

Would the problem be with the ignition switch, due to it grounding while cranking the motor, thus not allowing it to start?

 

[Capt dave 258]

At the back of the ignition switch, I moved the blue and white wires to each other's terminal, thinking that could be a different position of contact when starting but the results were the same. I greatly appreciate your help

 

[Nordin]

The issue is that you have the black wire connected at the I terminal at the keyswitch.
Remove it and isolate it at the terminal pad.
No ground (minus) wire should be at the keyswitch.
Use it if you will have auxillaries at the remote control or the dashboard.

 

[Capt dave 258]

The issue is that you have the black wire connected at the I terminal at the keyswitch.
Remove it and isolate it at the terminal pad.
No ground (minus) wire should be at the keyswitch.
Use it if you will have auxillaries at the remote control or the dashboard.

Yes sir, that was the problem! I deeply appreciate your help. Thank you so much for taking the time to help me. I will pay it forward.