My fog light bulbs had been removed and the plugs cut off for compliance (crimp spade plugs work a treat to replace the plug). The bulbs for series 1 fog lights are H3C and a P.I.A. to source good ones anywhere except EBAY. Narva charge like $12 each for H3, but $50 for H3c. If you want to go for a narva or similar, purchase H3, and just ground them onto the chasis near the headlights, or just put spade plugs on the harness as I did and plug them into either the back of the H3c or to the extra wire that comes off a H3.
For information, if you want an affordable H3c, supercheap auto sells their own brand for about $12 each from memory, about a quarter of anywhere else.
And the S1 fog lights are awesome..