Will this plug directly into my factory mirror wiring?

Yes — this mirror uses factory connector points and integrates with your OEM electrical harness. No rewiring or adapters needed.

What tools do I need to install this?

Basic hand tools. The mirror mounts at factory attachment points inside the door panel. Your vehicle's service manual will walk you through the interior panel removal and mirror swap.

Does the heater function work right away after installation?

It should. Once mounted and connected to the factory harness, power and heat controls operate through your existing dash switches. Test before closing up the door panel.