I have a Double Cab 2003. One of my front signal light burned out. I was trying to unmount the protective cover plate but could not locate any screws.

Which light? The turn-signal light (in the bumper) comes out from the back -- twist the bulb housing counter clockwise, and it will pull out of the housing. The housing itself is mounted to the back of the bumper with screws from the back side.

The screws holding the corner clearance lights are on top of the radiator support (open hood, look to either end near where the fender overlaps the support). Take out that screw, then CAREFULLY pull the clearance light housing straight forward away from the front of the fender. It is held in place by two tabs that fit into slots in the fender/support behind the light housing.

Good Luck! <img src="/forums/images/graemlins/patriot.gif" alt="" />

I'm not sure which bulb either? Maybe some notes in here will help:

http://www.4x4wire.com/toyota/tech/tacoma_turn_signal/