Dont have to order electronic flasher relays from ebay and wait. The are available at any parts store. Auto Zone has them for $10 that are LED compatible. Electronic ones use a timing circuit instead of amp draw so they dont care about the amperage as long as its not too high. You do lose the rapid flash thing that happens when a bulb burns out, but that happens with LED's and resistors on standard flashers as well.

Tridon/Turn Signal Flasher
Part Number: EP34
Alternate Part Number: FL34