I've fallen for that one also, however the lads at the garage played with the corroded contacts, changed the bulb and passed it so thumbs up to them. However last week I did fail on a new one, my rear fogs not working???? I came home, stripped the units out loosing a retaining screw in the process, bulbs ok, checked the fuses, relays etc everything ok, turned them on and off in the hope they would miraculously illuminate. Then like magic, I turned the front fogs on then the rears and illumination occured. Only if i read the bloody manual that tells you the rears only come on if the fronts are on !!!!!!!!!!!!!!!!!!!!! never mind took it back the next day and got the green light. I'm not saying you lot are as daft as me but watch out for that one, rather embarrasing.