Umm.. not to bash your electonic flasher or your knowledge... but how is adding a resistor the wrong way of doing things?
Jamstrait, if you read that post, sells the same thing, but I think with a 6ohm resistance and a little extra cash... which I think is mentioned... and if anyone knows much about LED replacements... jamstrait is one of the better LED replacement manufacturers.
So I see no reason to pay for an electronic flasher when 10 or 20 cents does it just as well.