pull the switch for the light and clean the contacts. when they get dirty or coroded they can stop working. that should take of the problem. this also happened on my mothers 99 SE

be careful not to loose the wire back into the frame

- 95 Mystique LS - Zetec/5spd - 99 Contour SeVT Sport - Duratec/5spd Official NE-CEG Contour/Mustang Family