Johnson LS37 coil testing

[seahuntboater]

Greetings.

I tried finding this coil info but only come up with the kind that slide over the metal. Can anybody tell me the range of readings I should see so I can determine if this is good or bad?

The coil has 4 solder points . Two on the top and one on each side. There is one on the top with plug wire so I know that is part of secondary. Maybe use test points such as plug(top 1) , top two, etc, Thanks Ralph

[seahuntboater]

Forgot to mention. I disconnected all wires but the plug.

[Buccaneer]

Top two solder joints are both secondaries.
Get your ohm reading across these two.
Can’t remember for sure, but thinking around 8K ohms.

Measure across the remaining two connection for
your primary reading.

Prepare to be boarded!

[seahuntboater]

Bad news. The coil was indeed bad. I even tried taking it apart hoping it was a broken wire at the edge but no luck and let’s be honest those wires are really fine. I just saw the post about taking apart the laminations and fitting an aftermarket new coil. This may be a possibility but I have never swapped to electronic ignition and this might be a good case to learn on. Does anybody know if there is any module that would fit or even if it is possible to take something like a Briggs module and slide it off the laminations and re-install on the johnson laminations like we do with seloc coils?.

thanks

Ralph

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