Hi Mr T welcome to the forum. Good to know there is another member from the UK as our Canadian friends ranks are really swelling

and they easily outnumber us Brits

.
I would have loved to have collected my B from Germany (but couldn't due to it requiring mobility modifications) it must really make it seem your own car. Our friends collected their M/B (not a B though) from the Germany & I gather it is some experience.
I went to Germany just over a month ago & found that most things (goods) seemed a bit dearer than here so I can't see the cable being much cheaper there. They often appear on ebay.
I can't remember seeing a white B over here so looking forward to seeing your pictures, you have made a good choice in getting the electric folding mirrors

I feel that with our narrow roads & restricted parking spaces they are a 'must'. Unfortunately I was unable to get them when I bought mine.
Good luck with your new motor & enyjoy your trip to Germany.
PS make sure you have all the legal requirements (especially reflective yellow safety vests) as the French Police are getting very hot on these things (along with speeding

) with us Brits