i have a generator for my bike and i recently decided to install it on the bike that i am currently using. i haven't seen the origanal lights that came with the generator for over 2 year so they are probably long gone or destroyed, so i went down to the dollar store and they had this rear light with 5 red led's that runs off 2 AA. i hooked it up in series with a front light from another bike i had and it worked great at first. i've probably gone about 20km with them on and only 1 of the led's are still working. do you think they would keep blowing because of the generator or could the led's be that cheap? do you think adding a capacitor might help? i also remember trying leds in the past with the same problem. they alway blow. i am not sure what voltage the generator is but is has not blown my front light which is only 2.4volt bulb.