76 Johnson seahorse kill circuit

[likearock05]

I have a 76 Johnson seahorse 35hp with model number 35EL76G with remote throttle and shift and key switch panel. The key switch kill was working for quite awhile but recently it has quit working. I was wondering if anyone has a wiring diagram for the engine or atleast the kill switch circuit. It has the black round plug under the hood in the engine harness, Any help would be appreciated.

Thanks
cary