The backup lamp on my gf's Mini was not working. So I took the spare wheel off, popped the backup assembly out and checked the bulb and it looked fine. Replaced it with a fresh one and still no workee. Fixture looks good, no frayed wires, but no power (as checked with my Fluke). Checked all the fuses, they're fine. So it occurred to me that maybe the backup lamp switch went kaput. Any ideas on where this beast is and how to replace it would be much appreciated (if indeed this is the problem, if not, any other thoughts are welcome).

Regards,
BVNitta