Ok so I am up grading the Road runner to a 3 speed wiper motor, I have the motor, linkage and switch. So what I’m wanting to know is do I need any other wires that come off the back of the switch? And if so where do they go to the bulkhead connector ? Here’s a picture of the back of the 3 speed switch. There are 2 terminals that the connector does not have! All help is greatly appreciated thanks