Does this plug directly into my factory wiring harness?

Yes—this mounts at factory locations and connects to your existing brake light circuit. No rewiring needed, just bolt and plug.

Will this work with my truck's existing electrical system?

LEDs draw less power than stock bulbs, so you won't overload your wiring. If your truck has a factory third brake light, this is a direct swap.

What if the sequential pattern doesn't sync with my factory brake lights?

The chase effect operates independently from your main brake lights. If you want all three brake lights to flash together, you may need a proportioning module—test first before assuming one is required.