Does this connect to my factory wiring harness?

Yes. This assembly uses the OEM electrical connector — it plugs directly into the existing harness behind the door panel. No splicing or adapter wiring needed.

Do I need both driver and passenger mirrors or just one?

Confirm which side you're replacing before ordering. This listing is for a single mirror. Order separately for both sides if needed.

What if the power or heating doesn't work after installation?

Test the circuit at the door switch and verify power reaches the connector. If the assembly itself fails, contact support with proof of purchase and vehicle documentation for return options.