Engine will not shut off with key

[robsm78]

I have a 2002 Tohatsu 50M outboard engine. It will not shut off with the key or the kill switch (safety switch). Also my trim guage and rpm Guage stopped working. I had to unplug the fuel line from fuel tank to shut engine off.

 

[pvanv]

What is your actual model? Sounds like the RC box is disconnected.

 

[ahicks]

Or the ground wire is broken/corroded?

 

[robsm78]

Tohatsu M50D 2-stroke

 

[pvanv]

Verify brown and black grounding wires and confirm RC cable is connected properly.

 

[robsm78]

Cannot find any problems with wiring or key switch, so far. Thought I knew how to trace and test theirs but guess I'm just shooting in the dark at this point.

 

[pvanv]

The stop function grounds the brown wire. Is that working?

 

[ahicks]

We'd both like to help, but you aren't giving us much to go on.
For your testing, are you using a volt meter, a test light, what?
Is your testing being done on the back side of the ign. switch, or somewhere else?
Is there anything that does work?