Changed out the rear red bulbs to LED, added a 3-wire flasher and all was well, Well while I am in the electrical mode,Changed out the front amber bulbs in the front, Well I thought the old man done GOOD!! WRONG, Turned on the the right turn and both started flashing, Turned the left and the same thing, Well I bought this bike in July and added anouther fuse block to help out on the igition switch, and also 4 relays. Now BACK to the problem About both front bulbs flashing, when the signal was on, OK heres my story and I am sticking to it!! The bottom of the amber bulbs that makes contac to the holders was about .190 long, after the bulb was inserted it made contac in the bottom of the socket it made contac on both hi and low feeding back to the outher bulb! Put 1157s back in and it works as it is supposed to, Well here comes the best part of this family an says it break time, I explained what i had done, Well she hands me 2 RED led bulbs and they worked PERFECT!! If anyone buys the bulbs at an auto show {fall Charlotte] MAKE SURE the the bottoms are like they are supposed to be, I am an old man, not much hair, Snowing and Sleeting out, and the garage fridg, is almost empty!!! Have a GREAT DAY!! Charlie Franz