Johnson A 25 magneto

[sbrown21]

I just bought a 1926 Johnson A 25 it tested bad coil across the plug wires. I took the tar off of the coil and plug connection the mag tested ok. Question what size plug wire ? ( 9 mm) how do I make the connection between the coil tabs and the spark plug wires ? When I pried the tar off of the connection the 2 cone springs were ruined. (tested 8 ohm. )
Help

[Tubs]

I have a J-25 that I haven’t gotten around to
so I don’t know what’s in there but in this
1923 Model A a bit of the insulation is removed
so some wire sticks out and they’re positioned
so they push against the tabs.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[steveh]

You actually need the ‘tar’ in there. It’s an insulator that prevents the spark from the coil going to the mag plate. The wires are simply pressed against the tabs.

[Goman]

I used one of these electrical connectors that fit and crimped it on. You may get a better connection if your good at soldering.

[Mumbles]

You can use a wire terminal like that but don’t they to be bent 90° to work right? I’m sure I’ve seen them prebent on Ebay or somewhere.

---

Attachments:

[Author]

Posts