1960 75hp super seahorse I need some help

[Gunloader]

Hi everyone I am new to this whole boating thing and im restoring My dads boat that was made in 1960 i think its a larson with a johnson seahorse 75horse motor ok so this motor sat for 11 years Pull started right up. the problem is i wired a new ignition and fried the wire that runs up to the coil magnito so i have a new coil being shipped in and i want to know if more than the coil can be roasted when this happends any thing to watch out for:facepalm:
Thanks mike

 

[F_R]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

You installed an automotive ignition switch didn't you? You will fry your new coil too, if you connect it to that switch. You need a switch made for magneto igniton systems.

 

[Gunloader]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

I got the same ignition that was on the boat and then matched up the wires, but not sure if i did more damage than the coil magneto is it possible that there is more damage than that i disconnected the battery till i can figure out the problem and was planning on putting a fuse on that wire to protect the new coil when i test the ignition by the way it is a 6 point ignition is there a special magneto switch and where would i find it

 

[witenite0560]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

If I remember correctly, it should be a 4 pole switch. 2 poles are normally open in off and close (have continuity) when you turn it to start for the start curcuit. The other two poles are normally closed (have continuity) when the switch is off and are open when the switch is on, these are the magneto ground curcuit that shuts the motor off. Hope that helps. You probably just accidently hooked power from the start hot pole to the magneto coil pole and...... well, you know the result.

 

[Gunloader]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

so do you think i did anymore damage than just the coil and hey what part of idaho you from i grew up in idaho falls rigby area just curious Thanks for the help

 

[Chris1956]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

The only other thing you could have damaged is the condenser. When you verify the wiring, clean and gap the points and install the new coil, and have no spark, you may suspect the condenser.

 

[Gunloader]

Re: 1960 75hp super seahorse

Re: 1960 75hp super seahorse

thanks so i have a brown yellow tan two black a green and a red wire is a wiring diagram that someone might have to help avoid cooking anymore parts on it so i can get the ignition wired right whitenite said that its my ignition and that i need a ignition magneto to avoid any damage what do you guys think i have looked and have had trouble to find this ignition switch