Does this mirror mount using factory bolt holes?

Yes, this mirror uses factory mounting points — no drilling or bracket modification required. Bolt directly to your existing mirror location.

Will the LED signal lamp work with my truck's existing wiring?

The signal lamp connects to your truck's factory signal circuit. You may need to verify harness compatibility before final installation — some mirror connectors vary by production year.

How stable is this mirror at highway speeds?

Manual mirrors are solid at speed since they have no power motor to vibrate or bind. The chrome housing and factory mounting design keep it rigid on the highway.