I am installing my dash harness onto the back of the dashboard prior to installing it as a unit in the car. The harness has two female connectors that land behind the 2 speed wiper switch, one connector has two female plug ins and the other connector has four female plug ins. The connector with the four female plug ins can only be installed one way and I notice one of the plug ins does not land on any of the male spades on the back of the switch. In addition there also seems to be one unused spade on the back of the switch once both plug ins are connected. Any help would be appreciated.