not always dan, depends whether you are using 2 fogs or 4 fogs and how you have the setup.
Firstly, fogs and spots are different lamps. Also 4 fogs would be illegal on cars made during or after 1991 and the number is not relevant to how they are wired. They have a different beam pattern and are for different things. The advice you are giving will make peoples cars illegal, please stop.
Any lamp that has a fog lamp beam pattern must comply with the rules for fog lamps. Any lamp that has no beam pattern is a main beam, or spot / driving / pencil / sport lamp or any other silly name given to it by Ring to sell in Halfords. Regardless of what it is called it is legally an auxiliary main beam lamp. Auxiliary main beam lamps MUST only be switched on with the main beam, they must automatically extinguish when you dip the lamps and this must happen with the operation of a single switch controlling all main beam lamps. They may not under any circumstances be on independantly. Please search the site for things like this, we've gone through it several times before.
Edited by Dan, 06 July 2008 - 09:21 PM.