What size is the main hex nut holding in the fog light housing in a P5?
 

Just like the subject says. Er, except I meant the nut. I know a bunch of you have changed your bulbs so SOMEONE has to know. I couldn't find it in the search or the FAQ so I asked. Thanks.

I only remember the three little ones (the top one is a bitch and a half to take off) behind the lights about a 6 or 8 mm I believe.......

I think the main nut is a 15mm

14mm

its a bitch

Thanks.