Does this mirror mount at the factory attachment points?

Yes — this mirror uses OEM mounting holes and bolts directly to factory locations. No drilling or bracket fabrication required.

Will the mirror stay stable and clear at highway speeds?

The powered adjustment system locks your angle in place once set. The heated glass keeps visibility clean in wet and cold conditions without fogging or ice buildup.

Do I need to run new wiring, or does this tap into existing harness?

Wiring configuration is not specified — have your electrician or shop verify connection points to your truck's power and ground before final installation.