Wow...this exactly what my 2015 K1300S is doing.I resurrected this thread for 2 reasons...
1) A couple of people have recently mentioned it, the symptoms at least..
2) I just did it myself.
On the way back from the dealer (yea yea I know) , I turned it off outside the garage and went to restart it and two slow turns died off to nothing.. At gas stations it would be slow but would eventually fire up. Since I'm heading to Newfoundland and Labrador in a week I figured it might be the smart thing to do
It's pretty easy, get a 8 or 10 gauge wire and connect it from the positive battery terminal down to the relay (red wire). YES there's a physical relay. It's located under the air box on the left side. Then, run the same gauge wire from the relay (black wire) to the terminal on the side of the starter. You do not remove any stock wiring. Just run them parallel allowing more current to travel. Yes I already have an odyssey battery that stays on a tender. Ran the bike around a while in 90 degree temps and now she refires just as quick and strong as when cool :clap:
My mechanic couldn’t replicate it in the work shop.
Will go back and get this fix done!
Thanks so much