Do I need fasteners or hardware to install this?

The mirror mounts at factory rocker points. Fastener type and size aren't specified in the product data—verify your existing hardware before installation or source replacements if needed.

How do I wire the heating element?

The mirror connects to your vehicle's heated mirror circuit. If your car already has a heated mirror switch, it should plug and play. If you're upgrading from a non-heated mirror, you'll need to run the heating wire to your existing mirror switch or have it tapped into the rear-window defrost circuit.

Will this mirror fit if I'm replacing a manual non-heated mirror?

It's a factory rocker-point mount, so fitment to the bracket is guaranteed. The heating element adds an extra wire, but wiring is straightforward if you already have power at the mirror location.