Fog Light wiring install help needed

[spain4065]

Ok, so I have 1m rep bumper on my 135i and I added the depo fogs. I wired them up to a universal switch and it works fine. I just now ordered the euro headlight switch with a fog light button and rear fog button. I would like to be able to wire it directly to the headlight switch so it would work flawlessly with the stock switch, but I have no clue where to tap the power wire to. Any help would be greatly appreciated.

Matt