Do I need to tap into any existing wiring?

This mounts at your factory third brake light location using OEM connectors. If your truck already has a working third brake light, you're plugging into existing harness — no new wiring required.

Will this work as a direct bolt-in replacement?

Yes. It uses factory mounting points and connects to your stock connector. Unbolt the old light, bolt this one in, and you're done.

Does the chase animation work every time I brake, or do I need to enable it?

The sequential pattern activates whenever brake pressure is applied — it's built into the wiring. No switches or modules to adjust.