i have a series 3 109 and am gradually putting things back as they should be but a lot of the wires for some strange reason have been chopped out and heres my query there are 2 green wires coming off the heater motor and disappearing into the bulk head but there is only one wire on the back of the switch so how do i expose the wires once they are through the bulk head do i have to remove all the dash or is there another way of accessing them