Turn Signal LED Light, with sequential feature (pair)
Rear Turn Signal sequential LED lights with high power OSRAM LEDs.
Designed and produced by MX5things. Manufactured in the USA.
Direct replacement of the WY21W bulb.
Two sequence options available:
"Sequential fill-up" and "Running" - demo clips in the blog
Ballast resistors are needed if the front bulb is rated less than 27W (EU uses 21W). No need for US cars with standard front bulbs.
Discussion on Miata.net forum here