How about you check the switches before you replace them. Get a multimeter and put a probe on each connector terminal switch it to ohms and see if you get anything when you hit the switch. Maybe it isn't starting becuase you screwed up the pats system. See what your securtiy light is doing when you try and start it.
Green 2000 SVT #1166
mods-K&N and Custom heat shield, optimized y pipe, Magnaflow center resonator, DMDhttp://www.geocities.com/savinoss/Cars.html
-Wifes car 99 Mystique V6 5 spd