Anyone who has factory central locking that either dont work or have no keyfob, you can use these kits with a few extra relays, 2 diodes and 2 capacitors can make a really simple interface to allow the signal from kit (2wires wires,polarity reversable ) to control ford locks 3 (of 5) wire system. Ford locks use a Constant earth and have 2 other wires one gets 12v to lock t'other gets 12v to unlock. (White /violet and orange/black )
This is what Im doing to use existing front drivers door lock.
Will use kit solenoids on sld and power pop for rear as i haven't got a door handle on rear!!