Around here the motor factors used to sell a kit with 5 actuators in them for about 20 squid. That would be your best source. The motors should be opened up tof ind the actual problem. ie melted brushes or commutator but they are probably brown bread. Have a look at www.jaycar.com.au under door lock kit. However I imagine Maplin or RS would also do them. I have fitted the kits to 2 cars without much difficulty. olewill