Just a word of caution for those who may be jumping into the LED world.
Many garden tractors from a while back sent AC to the headlights because it was more efficient than rectifying the AC to DC as 1/2 of the sine wave is lost in the rectification. Some AC was rectified to charge the battery.
Even Kubota's around the B5000 series had AC lighting.
AC power does not work with LED automotive products