Right - have just fitted mine and got them working.
I am not an electrician but have a reasonable level of technical ability and it took me about 5 hours. I will post photos, etc and some things that I fell for - including managing to wire the sensors to the indicators, not useful for reversing, but made a nice loud noise when I locked the car and the indicators flashed
Only problem is working out where on the underside of the bumper do the shorter fixing plugs go - I have filled all the available holes and yet I have the two shorter ones left over!!