Will this mirror work with the factory towing package electrical system?

Yes. The connectors are engineered to plug directly into existing factory electrical points — no splicing or adapter harness required. Power draw is standard for heated mirror circuits in this truck generation.

Does the heating element work independently of the power adjustment?

No — heating activates through the factory rear-window defrost switch. When you engage rear defog, the mirror heating cycle engages simultaneously. They share the same circuit.

What's the glass size and does it maintain factory towing visibility?

Mirror dimensions and optical properties match OEM spec exactly — no blind spots or visibility loss compared to factory heated mirrors. Glass coverage and curvature are identical to the original.