Hi folks, this morning I ordered a pair of non-LED super white 37mm festoon bulbs from the US that will give the same pure white light effect of LED bulbs, but without the Bulb Out Error on the DIS. They weren't cheap, costing just under £30 including postage (the bulbs were only $12.99, but the postage was expensive at $32.50), but IMO it's well worth it to get rid of the dull yellow number plate bulbs and at the same time not to have to worry about resistors etc getting hot or the bulbs melting the light housings. Lots of VAG owners in the US have these in their cars, unfortunately I couldn't find any UK stockists of these. I'll post pics of my results when they arrive. Hopefully these are the perfect plug and play solution to the A3/S3 2010+ owners (and owners of any 8P 2003-2011 A3) who don't want to go to the lengths of installing chassis mount resistors in their boot lids to go with their LED bulbs. Paula xx
They are Polarg M28 bulbs
Polarg B1 Hybrid Superwhite T10x37 Bulbs - Mini-Bulbs - AutomotiveLightingUSA.com
They can also be bought on Ebay for a few pennies less, but the seller is away until 02/11/11.
M28 Polarg White Bulb Dome light 6411 6413 6451 6418 | eBay
This is a preview of what they'll look like.