Morris Minor Owners Club

Did as you said with the heater wire and now my wipers work. Thank you Stephen really appreciate your help.

Thank you Stephen that's marvellous

So on my 1967 I have 3 wires to the wiper switch, Green, Black and Green and Black. The switch has 4 terminals, 1, 5 and 6 combined, 7 and 8. Please can someone tell me what goes where?
Thanks