66 dart neutral swith location

Mine's a column shift and I'm pretty sure it's a plug-in from the steering column to the main wiring harness. If you have the floor shift, I would think it should be underneath your console, or at the shifter mechanism where it comes through the floor, somewhere near where the shift rod mechanism is located. I believe some of the guys with older A Bodies and floor shifters will chime in and help you out. Good luck.