Originally Posted by bigfishs
Its unlikely any leds will flash properly without resistors. I put resistors in front and back but should have just done the flasher unit that goes under the tank. There is a thread here somewhere that talks about it. You can fit resistors in under the front light fairing and under the tool kit in the rear if you decide to go that route.
On a separate note, I love this forum. You guys are so freaking nice and helpful.
I replaced every bulb except headlight on my bike with LED. I used an electronic flasher; way easier than messing with resistors, and with resistors you'll just waste power as (a small amount) of heat. I wanted that electricity for heated grips.