Sounds to me like you may have the dash light or cowl light wire mixed up with the feed wire. If that is the case, the terminal ends are wrong or have been switched from a bullet style connecter to a ring terminal. It is always possible with repop switct assy's that something is wrong there. Also, on repop swith assy's, the slip on terminals need to be soldered to the switch asy tabs. If not, they may slip off and either send power to something else or short out. Original switchs had soldered wires.