You may want to look at what a new switch looks like (maybe you already have yours in hand). Note that there is a short, but large spring on the end of the switch that would rest against the back of the sheet metal dash. To remove your old one, you will need to reach under your dash and push the housing towards you, then turn it clockwise (as you face it) and it should pop off. IIRC that is the procedure but it has been a while and I am on some drugs at the moment because of an illness. Of course, unhook your battery soon.