Will this fit into my factory brake light housing?

Yes. This unit is designed for direct OEM mounting points — no drilling, cutting, or fabrication needed. It seats into the factory location the same way the original light does.

Do I need to splice into my vehicle's wiring?

No. This uses the factory electrical connectors, so it plugs straight in. If your vehicle's connector doesn't match, consult your vehicle's electrical documentation before install.

What if the LED doesn't turn on after install?

First, verify the connector is fully seated and all pins are clean. If the light still doesn't illuminate, check that your vehicle's brake circuit is functioning — test the factory reverse or brake lights. If those work but the 3rd light doesn't, the module may be defective and qualify for return.