how do i replace myheadlight bulbs on 2003 ford taurus?

should be from the back side of the headlight inside the enging compartment. If you need more specifics the owners manuel should tell you how also.

Welcome to 10w40.com.

To replace the buld in your vehicle first make sure the replacement bulb is the same type and part number as the one that is being replaced.

To Replace:

Remove the headlight bezel retaining screws. Remove the bezel. If necessary, disconnect the turn signal lamp wires.
Remove the retaining ring screws from one or both lights.
Remove the retaining rings.
Remove the light from the housing. Disconnect the wiring connector from the back of the light.
Push the wiring connector onto the prongs at the rear of the new light.
Place the new light in the headlight housing. Position it so the embossed number in the light lens is on the top.
Place the retaining ring over the light and install the retaining ring screws. Tighten them slightly.
Check the aim of the headlight and adjust it, if necessary.
Install the headlight bezel. Secure it with the retaining screws.
Connect the turn signal lamp wiring (if it was disconnected).

Good Luck.