Can confirm it's H3
When you were in halfords did you not use their flip chart books for matching the bulb yourself? Quicker than asking a spotty 16 year old
My local Halfrauds doesn't have a page with Seat on it! When I asked about it the guy said the book must be right as he had just put the new one that morning, hence how I ended up with two brake lights when I went in for tail lights. This is also surprising as he typed the number of my plate into the Halfrauds Super Computer and that was the only bulb type it came up with for my rear lights. Which if anyone on here who has changed there will know it's a 501 bulb, same as the sidelights, and indicator bulbs.
Just checked on their website which also seems to tap into the Super Computer and they have the foglights listed as H7??
There is no mention anywhere of H3 bulbs, and I for a fact that they are H3 as I've changed mine and my Dad's fog light bulbs.
H3 Bulbs are the ones with the little tail wire on them aren't they?
Another thing I should point out, the last time I changed my bulbs I put the drivers side fog light in upside down, (didn't know that they had a top or bottom!), it was shing up instead of straight out... took it out, turned it round, back in nae bother! Straight as...
.G.