Control device for a coupling and trailer coupling fitted with the same

The control apparatus (50,150) has wiring interface which is connected with vehicle electrical system (93). The wiring interface is provided with single motor load input terminals connected to electrical power supply. The motor output load terminal assembly is provided with electrical load output terminals for connecting electric drive motors (26,28) of trailer coupling (10) to control apparatus. The switching unit is provided for enabling simultaneous and/or sequential electrical connection of electrical load output terminals with single motor load input terminals.