Thanks L G. I’ve thought of a similar rig. The “pig tail” should be short so as not to interfere with removing the motor. I made a pig tail with to off the shelf plugs, both water proof and dust proof. One plug two conductors for the battery and starter. The other is a three conductor plug for choke and Mag continuity. The motor side is male. The other plugs are female. All leads are taped together and lead back to the control box. I covered the cables with heat shrink just to clean it up. Thanks for the lead.

Crosbyman. Not sure if you were replying to me or one of the other posts. My 1958 Johnson is a 18 HP Electric Start…..FDE-12. Not sure where the confusion is. I wasn’t sure how to get the starter out of the bracket so that I could take it to somebody to repair. There is a welder guy close to TO that says he can fix the broken post. There is also a guy in Simcoe that can do it, apparently.

With respect to the female plug to fit the five pin male plug in the engine frame, I know it is a long shot to find one. It is easy enough to “jury” rig a pig tail and a couple of water proof plugs to suffice. I was just hoping to keep things somewhat original. The plug that one can buy from NY Marine is just too expensive.
However, I am most of the way through a CAD drawing of the “plug” and then I’m going to hand it off to a 3D printer guy. Just have to figure out the wire connections inside the new plug. I’m told that most high school students have the smarts to do this sort of 3D printing.