Thanks man. I just broke one off that was particular soft, did it with an extension and socket, didn't even have a wrench on the extension yet. Was thinking of ways to repair it like drilling a shallow hole for a screw and washer to go into but this coupler idea is so much better. Hopefully I have enough stud left to get a coupler on there. So simple of a solution :)

Not only was this an excellently made video, it also helped me determine if my starter solenoid could be repaired. Mine has cover screws on the terminal side of the solenoid so I am assuming it can open up for access to the plunger. Mine stopped sending power to the starter motor itself. All that activates is the solenoid. While I hold no false illusions that mine can be "cleaned up" to get more life out of it, I feel I have to try once before buying a new one. Right now, I am stuck using the solenoid to engage the starter gear, and another starter relay to send the voltage to the starter itself to crank the engine. lol Looks horrible, but it actually functions. Had to use a small 10 amp relay to lighten the load on the original starter's solenoid wire, to power the additional starter relay. lol VERY RARELY does the starter gear get "stuck" in the activated position. It is caused by the second relay not disengaging before the original solenoid does. A quick off/on with the ignition key allows the gear and plunger to return to it's resting position. Also, I am surprised at how lucky I was that the 10 amp relay is a tad slower than the solenoid at "turning on", otherwise I am sure all I would hear is that lovely double start grind we all fear. lol Not normal, I know. And bad for the starter in the end. But it has only been wired this way for 2 weeks, and has only been cranked over 8 times in the current configuration. Rambling aside, THANK YOU for this video!! Really wish it would have been at the top of the page while searching. It would have saved me some time.

Had to use this on the fly today. Works great!!!

Great fix. I think I would have used some lock tight on the coupling so it would not vibrate lose.

how do I replace the metal peice that slides on the bolt? mine broke in half and I really don't want to replace the whole starter. the positive wire from start to solenoid the peice that slides on the positive post broke.

Where can i get those couplers you were talking about?