Do I need any additional hardware to install this?

The assembly mounts at factory rocker points using existing fasteners. Verify fastener condition before installation — if originals are corroded or stripped, have replacements on hand.

Will this work with the factory wiring harness?

This assembly is designed as a direct replacement and uses the OEM connector. Test all functions (brake, turn, reverse if equipped) after installation to confirm proper operation.

What's the return process if this doesn't fit?

Test-fit the assembly before finalizing installation. If alignment or fitment is incorrect, document the issue with photos and contact support with your order number for next steps.