He wants to turn on foglamps without the need to turn on the low beam.
While perfectly doable in european trim of the E46, this is considered extremely lame here (so-called 'photon drive') not to mention it blinds other drivers. And AFAIK you are not allowed to turn on foglamps, unless there is, uhm, fog, or other low-visibility condition. So do not do that, please.
330 xdAT, 320 td