Originally Posted by Riptide

What stock light switch? The fog switch? Your highbeams? Or just the lights in general? If it's your lights in general or your highs, you should really have a separate switch. If you're going to use your fogs to trigger the relay, by default, they go off when you turn your highbeams on - meaning anything triggered off of this would go off as well. Additionally I wouldn't suggest having lights on the WS without some way of turning them off.

All that being said, I wouldn't put a fog light on the WS. It's designed to go a short distance and very wide. I would also pass on a halogen light (although that depends on your budget). Most people put spots there, but driving lights also work.