Q: "The extent of hooking up the wiring to the button says: Feed the wiring line through the under body back of the control box and connect. Where does the Tailgate Pin Switch on step 5A connect to?"
A: See image below
Q: "The extent of hooking up the wiring to the button says: Feed the wiring line through the under body back of the control box and connect. Where does the Tailgate Pin Switch on step 5A connect to?"
A: See image below