Does this plug straight into my factory harness?

Yes — the connector matches your factory mirror wiring, so it plugs in without adapters or splicing. You'll need to route the harness if your vehicle doesn't already have power mirror pre-wiring, but the connector itself is direct fit.

Will the heated function work immediately after installation?

The heater will function once power is connected and you activate it through your vehicle's climate control. Some systems require the engine to be running; check your owner's manual for activation protocol.

What if the bracket doesn't align perfectly with my door?

Factory brackets are engineered for OEM fitment, but minor adjustment is sometimes needed during installation. Test-fit before fully tightening — most alignment issues resolve with bracket bolt repositioning.