Just done this mod, all that is required is a pair of electrically folding mirrors (5 wires not 3), mirror switch with retract button and the door wiring loom if you can get it.
All the wires needed are in the white connector block (top connector) at the side of the footwells, so even if you don't have the right loom, you can just feed a couple of wires through and join them up. Luckily they all appear to be like for like colours so finding the correct wire is no problem.
The curved white plastic connector hiding the wires in the bottom corner inside the doors is held in by one plastic clip, a screwdriver will release this from the hinge side.
All the wires needed are in the white connector block (top connector) at the side of the footwells, so even if you don't have the right loom, you can just feed a couple of wires through and join them up. Luckily they all appear to be like for like colours so finding the correct wire is no problem.
The curved white plastic connector hiding the wires in the bottom corner inside the doors is held in by one plastic clip, a screwdriver will release this from the hinge side.