ya know its easier to just rewire the switch for fogs only. You'd need to pull out an e39 wire diagram to verify the colors and junk though. I'll look for the link later. I'm just up early to avoid traffic after one of the interstates got messed by the rain yesterday.
As for you current wiring suggestions, I'd say none. Do the instructions say wire them in series? Unless they do, I'd wire them in parallel.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>