Ok.. I know Lux and Bill have been talking about lightswitches in Lux'* post. I added my two cents about 95 not being the same as the part that is named as the replacement.
Today I lucked out and found a 95 to show the differences
95 left, 96-99 right
The 95 twilight piece is plastic with nothing over it. A slit down one side. The sentinel ring has an inward jutting piece that slides into the slot.
The 96-99 has a metal collar and out jutting tab on the collar. The sentinel ring had a notch cut into it to turn the sentinel.
Pulling the collar off yields no success. Therefore if you have a 95 style you would need to order the sentinel ring to make the new style switch work properly.
Also there are a couple of wires on the connector that are different. Crappy pic..sorry
The wire color does not effect anything, however wire position should be maintained if replacing the connector.