Will this connect to my existing door wiring without modification?

These mirrors use factory-style connectors designed for your vehicle. Splice into your existing mirror harness or run new wire to your door switch — no door panel reconstruction needed.

Does the heating element turn on automatically?

Heating function is controlled by your vehicle's defrost or climate control system. Once wired in, operation depends on your setup — refer to your owner's manual for control location and behavior.

Can I order just the driver side, or do I need both mirrors?

You can buy individual mirrors. Order the side(s) you need — no requirement to purchase a pair.