Does this connect to the factory wiring harness?

Yes — this mounts at the factory third brake light location and integrates with your existing wiring. No additional harness modifications required for plug-and-play operation.

Will the LED brightness match my factory taillights?

LED brightness depends on your vehicle's taillight design. If your factory taillights are incandescent, the LED will be noticeably brighter. If your truck has LED taillights, brightness will be comparable.

What if the light doesn't function after installation?

Check that all connections are seated firmly at the factory harness. If the light still doesn't work, verify your vehicle's brake light fuse is intact. Test with a multimeter if you have one — if voltage is present but the LED doesn't illuminate, the unit may be defective and eligible for return within the standard window.