Will this plug straight into my factory wiring?

Yes. This mirror uses OEM-spec connectors that mate directly to the factory harness on your vehicle. No splicing or adapters required.

Do I need to remove the door panel to install this?

You'll need to access the mounting bolts at the door. The exact procedure depends on your model year—refer to your vehicle's service manual for the specific removal steps.

Is the heating element already wired, or do I need to set it up?

The heating element is built into the mirror and wired through the factory connector. Once you plug it in, the heat function activates with your vehicle's climate controls.