Headlight Switch Cranks Engine??

My Dakota tries to engage the starter when you shift it from park. I've had the NSS disconnected and been using the pushbutton starter method for now. I'm going to say it's backfeeding through the reverse light circuit, but I don't know.

Pull all the lighting fuses, and see if it still does it. Add them in, one at a time (while pulling the one you just tested) to see if you can narrow it down to a taillight, brake light, etc. circuit.