merc motor won't shut down

skippy D

Cadet
Joined
Jun 9, 2003
Messages
28
Ok 1962 mercury outboard (500)50hp4cyl 2stroke . just put starter & solenoid , used controler (bought from ebay) with cables & wiring harness every thing works good exept motor wont shut down when you turn the key off . any ideas ???
 

The Marine Doctor

Commander
Joined
Jul 25, 2003
Messages
2,177
Re: merc motor won't shut down

If memory serves me correct...you will now be the proud owner of the wrong wiring harness.<br /><br />TMD
 

skippy D

Cadet
Joined
Jun 9, 2003
Messages
28
Re: merc motor won't shut down

Wrong wiring harness ? everything else works ok . what can i do to fix ?
 

RICKRICK1

Ensign
Joined
Jun 24, 2002
Messages
926
Re: merc motor won't shut down

skippy do you have a manual for your motor and does it have the wiring harness diagram? you have either the wrong harness or a wrong/bad key switch. Also could be an open in the ground wire from key switch to ground, not stopping the motor. You also need to incorporate a safety switch in your wiring system. I dont have my book with me , but the wire that comes off the distributer/magneto grounds out the spark stopping the motor. Check the wiring from this wire back to your switch.
 

skippy D

Cadet
Joined
Jun 9, 2003
Messages
28
Re: merc motor won't shut down

I was wondering if i could put a kill switch in the controler somewhere & kill power going to the distributer . just turn it on when i want to start it and turn it off when i want to kill it .
 

corm

Lieutenant Junior Grade
Joined
May 12, 2000
Messages
1,241
Re: merc motor won't shut down

Skippy,<br />Take the switch and harnes out of the old box and put it in the new one. Not much fun, but the best way. Otherwise put a toggle switch in the dash and run the wires back to the motor 1 to the dist post and the other to ground. I hope the new harness does not put 12 volts to your coil when the switch is on.
 

skippy D

Cadet
Joined
Jun 9, 2003
Messages
28
Re: merc motor won't shut down

Thanx corm, i'll do that wiyh the switch as my old harness is shot , one of the reasons i replaced it.
 
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