Hopefully I will be able to get new passenger side rear door from breakers at weekend but how easy is it to swap these over - current one is well bashed and not even close to water tight.

Quite easy if hinges ok thats already on van just undo nuts 3 on each one I think

What about the electrics for number plate lights etc, how does the cable disconnect that goes into rear of door.

Just unplugs then plug back in cheers