
Maybe I've got the wrong end of the stick here but I'm assuming we're using 12v LED's and the problem is with the flasher circuit not working properly. (Just had a re-read, I probably have got it wrong). If the LED's are blowing it must be because the LED's aren't 12v. 12v LED's will usually have a resistor in series as well to drop the voltage across each LED to about 1.2 - 2v.