[villagetinker]

Originally Posted by DonH57

Our 2017 Yamaha has self cancelling turn signals and recently whenever I turn on the 4 way flashers every thing is good until I turn them off and it blows the ten amp fuse. All other functions are fine, so far.

I have no idea which of several wiring harness and self cancelling modules you have, but this sounds like a bad turn signal switch. I have seen turn signal switches fail for various reasons. I would suggest replacing the switch, if possible, I am guessing that one of the contacts is loose causing the short circuit. You have been very lucky so far, every time I have come across these types of failures the electronic module usually fails first to protect the fuse.