I've also looked into swapping my original bulbs for led replacements,hell I've even bought some that I thought would do but are to tall compared to the standards and I can't refit the covers. I'm still contemplating buying some of the shorter than standard cob type bulbs as this will fit.
First things that will happen is the bikes standard flasher relay will let the led bulbs to fast ,as the current draw is less than expected it presumes one off standard would be out and this is your warning sign. This can be rectified buy swapping to a variable flasher that can be adjusted manually,from eBay about �1.
Don't worry about other parts of your bikes electrics being affected ,just think of indicators power being a normal 12 volt supply and the flasher relay turning it on and off.

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2011 xt660z.
Yoshimura cans ,kev mod,Dna 2, Stahlkoffer panniers,Hepco Becker box,Givi crash bars,Mita e07 tyres.