OK, they tell me that the only way to learn something is to ask questions. well here goes. Pictured below is a pic of a switch in the 4 speed.2 prong. also a pic of a switch I just bought, 3 prong. that is the switch I asked about earlier if the one out of the 904 would work in this 4 speed. some of you guys said yes it would. tell me how this 4 speed is going to tell the difference in these switches. The back up lights worked on the Dart with the 3 prong in it on the 904, however my son did accidentally started the car one day in drive. I am assuming the switch was bad. right.............what all does this 3 prong switch operate. I guess I can just plug the old connector into this new switch when it is in the 4 speed and it will do the same thing or will I have to rewire it. is the center prong ground on this switch. someone school this old man in what I need to know here. Thanks,Bill