Wouldn't have thought it would be too hard, but you don't need to. They do another c/locking kit that can be integrated with the rover alarm. The rover unit is capable of running central locking and the two can be wired together. I've had this on my MPI for the last year now and it all runs off the original remote. I get both alarm and locks simultaneously (still winding my windows by hand).
where may one aquire one of these? links would be nice
Sorry not to get back sooner - been on holiday.
I've also checked and I apologise - it wasn't Moss, it was Mini Spares I got mine from. They do two kits. One for the older cars, where you can then also get the keyless entry kit, which comes with its own fobs and another set is for the MPis. The second is the one that I have - MSSK2004 is the key-controlled central locking (£61.69 inc VAT) and then you buy MSSK2006 (£28.20) to get the additional wiring to plug into the Rover module. It then all runs on the existing Rover remote, alarm and locks at the same time - nice.
It wasn't too hard to fit. It's a little fiddly to get the locking mechanism right (the travel is only *just* enough in each direction) so you need to spend a bit of time carefully measuring up before you drill and bolt into the existing lock lever, but mine's survived about a year of bouncing around the road now. The wiring is straightforward, except for the step that said "find a convenient 12v power source". I eventually found a bit of connector block on the back of the stereo and decided to use that rather than risk damaging the supply to something more critical. Other than that, and finding somewhere to mount the relay, it's trivial to fit and came with tons of spare cable, so you could be pretty flexible as to where you put it.
Edited by DFulton, 25 October 2008 - 03:49 PM.