W5W LED Sidelight bulbs

[bearra 0]

Has anyone tried these bulbs?

501 T10 W5W Canbus safe error free LED on eBay (end time 17-Nov-09 22:24:22 GMT)

[PetrolDave 1]

It doesn't say if they have a built-in resistor, and without that they will still cause a bulb failure warning in any car designed for normal incandescent bulbs.