I should add that Tiny's solution is the cheapest and easiest.
The reason I went LED was so that I could use my parking lights as blinkers with an amber light that could be seen during the day. LEDs are the only way I could find to solve that problem. But once you start ordering 6v LEDs from china and swapping out your blinker module to support LEDs, it makes sense to swap out the tail lights as well.
