How can you turn on the lights bumper of your 2003 dodge ram hemi?

The 2003 Dodge Ram Hemi doesn't have lights *in* the bumper itself. The bumper houses the parking lights, turn signals, and fog lights (if equipped), but these are controlled by separate switches and are not "bumper lights" in the sense of an independently illuminated element within the bumper.

To turn on the lights you're likely referring to:

* Parking/Tail Lights: These come on automatically when you turn the headlights on (using the headlight switch) or are separately activated by the parking light switch.

* Turn Signals: These activate when you use the turn signal stalk.

* Fog Lights: If your truck has fog lights, they typically have a separate switch on the dashboard.

There's no single "bumper lights" switch. The lights in the bumper are controlled by these other systems. If any of these lights aren't working, you'll need to check the bulbs, fuses, and wiring.