Just a little advice when you change the switch on a 97 3500. What a stupid idea someone had at the factory to glue the two plugs in the unit. There are ways to get it apart but why in the first place. I ended up braking it out. In doing so a few wires broke and wern't able to attach by soldering. I ordered two new plugs($120) and spliced the wires on. If this happens to you cut and do one wire at a time. Hope this helps someone in the future. I heard after the fact you can also use a heat gun to get the plugs out.