I very recently acquired a 1972 Dodge class C, not bad for the age, mostly cosmetic damage and wear. I am in process of changing out the transmission with a used tranny I was told would work fine (I'm more of a parts changer than a mechanic). I noticed though that there is one difference in the two transmissions, on the one currently in the motorhome the neutral switch is equipped with three wires, and on the one I am putting in there is only one. The way they mount in looks similar enough that the parts might be interchangeable, would this work ? I would I lose the backup lights ?
Any help please