Turn your vehicle off, and let the engine bay cool before starting the following steps.

First, open the driver side door, and reach under the steering wheel and release the latch to open up the hood of your truck.

Next, walk over to either of the headlights and remove the pin above the headlight to release the housing unit.

Make sure to put the pin in a safe location so you can lock in the housing once you finish replacing the light bulbs.