Need help

michealsnewboat

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Joined
Oct 13, 2009
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3
I have a 1967 Mecury 500 50hp. I need a wiring diagram...... Also is the wire coming off the distributor a HOT wire or A ground?
 

michealsnewboat

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Joined
Oct 13, 2009
Messages
3
Re: Need help

Not sure just got the motor two days ago and new to the boat thing. I rebuilt the interal wiring harness. Things are just messed up all over the boat. What is the best manual to buy also? It is just a singal wire from the harness that runs over to the distributor.
 

Laddies

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Sep 10, 2004
Messages
12,218
Re: Need help

If it's a single wire from the harness hooked to it it's a magneto or if there are 3 wires going to a box on the inside of the front face plate it's CD. Single wire is a ground off wire for the mag and 3 wires are signal wires don't hook 12 volt to either unit or you will cook something.
 

michealsnewboat

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Oct 13, 2009
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3
Re: Need help

Thanks alot... Got that figured out. I have no spark.... I took all the spark plugs out and tested them one by one no spark coming from any of them, when I crank the motor over
 
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