Will this mount using factory mounting points?

Yes. This mirror is designed to bolt into the existing factory location with no drilling or modification required.

Does the heater work independently, or does it run through the truck's defrost?

The heating element is wired as a separate circuit — it pulls power directly through the mirror harness and activates via your truck's mirror control switch or integrated button.

What about the LED turn signal brightness at highway speeds?

LED turn signals respond faster and produce a brighter, more uniform light output than stock incandescent units, ensuring visibility in all lighting conditions.