Oh I see, well I had hoped that the built in resistance of the after market flasher would take care of this, it is separated left and right as you know. I probably missed something but I didn't think that the leds were "new" but the problem was...which led me to the flasher relay... Anyway, like you said, it's an interesting problem top speculate on. BTW I have my leds wired with a no load flasher and it solved all of my problems. Of course, I have front, back, integrated taillight and under tail leds that flash, so it's a different scenario altogether.