Napa p/n is lit27250c
one little problem, it's 24v
Napa doesn't have a listing for the 12v one yet
You can buy them at Pep Boyz, AutoZone, Advance Auto, and other places. LEDs are low power anyway. If they do not have current limiting resistors on them, then buy 100ohm/330ohm resistors and put them on the supply line. When LEDs heat up, they draw more current. Some draw so much that they blow themselves up. The resistor limits the current MAX the LED can draw, thus saving it from itself.
The Winshield bolts on my C50T, are ALL LED fasteners. I have a 60Ohm resistor on all the white ones across the top (7), 100Ohm on the green ones going down (4), that blink with the turn signals, and 100ohm on two other green ones. You must use resistors to keep them from blowing out. Usually, the headlight kits have them. I make my own resistor packs, it's so easy...
You can use any LEDs really, just do the math, and get the current limiting resistor. You only need drill the hole to mount the LED in the Headlamp or tail-lamp housing; and, you can use ANY LED for this, if you know what you are doing. I drill the hole for the wired LED; place excellent glue on the ridged edge of the LED, and insert it into the hole, let it dry. This is NOT HARD at all, you don't need anything special if you can work with these kinds of parts.