To anyone wanting to upgrade their central locking to remote locking, it is very easy to do.
Installed a Rclick kit today,all but 2 of the wires are behind the bonnet release cover,the other 2 on steering column . The kit is spot on for £29.
I followed this
guide from a Lupo forum
The plugs you need are down in the drivers footwell, behind the bonnet pull. You need to get the bonnet pull off (On the back of the handle, near the top is a 1 inch square, push this in and the pull will spring off)
Remove the screw holding the cover on and pull it off towards the back of the car.
To wire it in you need to use the middle (brown) plug for most wires (+12v, Lock and Unlock) and the blue plug is used for Window Wind Up.
Red wire (+12v) connects to the Thick Blue/yellow wire in the brown plug.
White Wire (Lock) Goes to the Grey/Yellow in the brown plug
White/Black (Unlock) Goes to the Blue/violet in the brown plug
Green (Window roll up) Goes to the Grey/yellow in the blue plug.
Black (earth) use the screw that holds the silver bracket to the kick panel next to the door shut.
Yellow and Yellow/Black - Ground both of these
This leaves you with the 2x brown wires for the indicators, which go to the white/black and green/black wires in the steering column
If you look up under the dash, under where the fuse box is you'll see a white frame that holds a few connectors and relays. My little box fitted up the back of this pretty well i just used the sticky pad to get it up there. Dont forget to put the fuse somewhere you can get to later in case anything goes wrong.