Just took the rear wiper assembly of my car to investigate why it was not working... there is a round four wire plug on the end of the wire coming from the wiper motor... But nothing to plug it in to..? whats going on? the only wire coming from the drivers side of the hatch back has been messed with and now goes to the boot central locking motor.. cant think these two motors (cental locking and rear wiper) were ever on the same circuit.. Also should the rear wiper come on with the windscreen wipers... there dosn't seem to be a seperate switch.........????????