Will this plug directly into my factory wiring harness?

The assembly mounts to factory points, but wiring compatibility should be confirmed before installation. Check that your truck's third brake light connector matches this unit's terminal type—some adapters may be needed depending on your model year within the range.

Do I need to remove the tailgate to install this?

Installation requires access to the rear center panel where the third brake light sits. Your truck's service manual covers the exact steps; most installs are straightforward with basic hand tools.

What if the LED burns out—is it replaceable?

The LED is integrated into the assembly. If a bulb fails outside the return window, the entire unit would need replacement rather than individual diode service.