I have a brand new OEM wiper motor, RTC3867. Please note it is "Britpart" branded but is in fact an OEM motor (I won't purchase britpart parts unless they are OEM). Does not come with the drive or the gears. You need to take them from your old motor.
It arrived with a broken switch which will need to be replaced or borrowed from your old motor.
Switch available here:
Atlantic British price: