Do I need to splice wires or can I use the existing harness?

This uses the factory harness connection — no splicing or rewiring needed. Plug it into the existing third brake light wiring and you're done.

Will this work with my truck's existing wiring without modifications?

Yes. It's built to integrate directly into the factory electrical system. No harness adapter or additional modules required.

What's the difference between LED and the stock brake light?

LED lights respond faster and produce noticeably brighter output, which improves visibility to drivers behind you. They also draw less power from your electrical system and last significantly longer than incandescent bulbs.