Bulbs. Turn signals are 10 marked wy10w. City lights are marked w5w. Edit: LEDs arrived. W5W LEDs almost indistinguishable from the W16W LEDs. Looking closely 2 chips are different. Light output to the nekid eye is similar. Also have yellow 194 LEDs for the turn signals that are supposed to be canbus compatible. The are plenty bright but as predicted, the OEM flasher doesn't work. I put new bulbs on the rear. Turn on turn signal and the flash too quick. Put o. Hazards and everything flashes normal rate. I assume this is because the front two bulbs put enough load on the flasher.