If the bike will push start and runs fine, and the starter is clean and responds to a jump, but either OEM switch/rely is not working or unwanted, then a new starter switch is pretty easy as you see. 

There is a good spot on the coil cover, and last shot shows cable routing. Basically all you need: high amp switch, heavy gauge wire, two short lengths. Drill a hole in coil cover about 20mm inboard from inner edge, centered between mounts. Route one cable to starter and carefully attach other end to battery. Mind your connections are not going to pop loose. 


Starter switch by unoh7, on Flickr



Starter switch by unoh7, on Flickr

Starter switch by unoh7, on Flickr


Starter switch by unoh7, on Flickr

Once I learned the oem switch just allows a direct short unfused feed from battery, then I figured a work around should be easy. The button is big and not going to be pressed by accident. Yes it will turn the bike over with key off.


Switch by unoh7, on Flickr



Don't get me wrong: I would prefer the OEM method working, on my own bike. But this works fine, it seems.

Hello!

Nice solution.
Thanks for sharing.

Cheers

Use tinned #12 or #10 AWG stranded wire and crimp-on ring terminals.  I promise that you will regret wiring it the way you did in a year or so.

Double ditto on using ring terminals.

Another option would be to mount it similarly to the BMW mount for a Powerlet socket. Part 4 in this diagram.

Thank you for replies.

I'm using 100% copper 12 gauge speaker wire with heavy insulation. The best in my workshop I will monitor the insulation to be sure it's not melting.

Thanks for idea attach to rings and connect them to the switch. I have seen so many crimped and soldered wires come loose. I put this together very carefully and then examined it closely. Originally I was going cover each side with insulation. But the sides were well separate and after I cranked the screws the attachment seemed very firm.

Per concerns here: I will inspect. Long run, I hope to find a good clean handlebar control.

But to all:

While even a MX kill switch will work about 10 times in a pinch, to be reasonable:

60 amp switch.
12 gauge wire with heat resistant insulation.
Strong connections.