I have a 2002 ram 1500 with a 5.9 motor. The reverse went out in the transmission (which is a newer 46re) I replaced the transmission with an older version of the 46re that supposedly came out of a 2002 dodge ram truck with a 5.9 motor. Well the only thing that is different on the the two transmissions is the neutral safety switch. But from what I've been told by everyone is that I don' have to have the neutral safety switch but now my truck wont start. Everything fit perfectly and I don't know or understand why my truck wont start. Has anyone ever had a problem like this.