GP - Interesting thread. Sorry about your misfortune, but I'm glad it didn't do much damage, and we all appreciate your sharing your experience on the wire bundle repair.
I have one small favor to ask. Could you please identify which wires control the back-up lights? I'm planning to install a back-up sensor on my daughter's 04 325i, but am stuck at the wiring step, and I don't have a Bentley manual (yes, I know, I need to get one, but with my wife's new business still struggling to keep its head above water, money is very tight).
Thanks very much.