How do you replace a neutral switch on a 1992 Ford F150?

It is bolted to the case on the trans.It slides over the shifting shaft and is held with 2 bolts. Be sure to align the marks up when adjusting before tightening down. I believe this is done when the trans is in the neutral position. The marks are molded in the plastic - one on the switch body and the other on the moving collar. They are little raised lines. Dan the tranny man