Drivers door lock on 1996 Ford Explorer

I had a gas line put in and the power was cut off. The door lock on drivers door (combination lock) dosen't work anymore.
Where is the box in truck that has the buttons in it. fix it.

Asked by for the 1996 Ford Explorer
I would take your Ford back to to the shop or person who botched up the job and ask them to repair the damages that they caused.