Identify which switch I need

Hello All,

I have a 70 Duster that was a /6 and now has a 340. When I bought the car, it didn't have the wiper switch in it. I have looked at mymopar.com to try to get a part number so I could see if one is available out in the world, but the one that is listed there doesn't appear to match the plug in the car. I have also searched here, but not finding anything either... Can someone give me the correct part number for the switch that will work with the attached photo?

Cheers!