Have you looked behind the bumper, the wiring may be tied back in the engine splash guards (plastic tray like things in front of the wheel arch)? I’m not sure how you would be able to see other than taking off the bumper (which isn’t a difficult job).
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I have the opposite issue, I’ve removed the fogs from my facelift E85 and don’t know what to do with the cabling / light that I am no longer using.