Will this bolt directly onto my factory mounting brackets?

Yes. This mounts at factory rocker points with no drilling or adapter hardware needed. Use your existing fasteners to secure it in place.

Do I need to do any wiring, or does it plug into the existing harness?

Wiring configuration not specified. Before install, confirm the connector type on your vehicle's factory harness matches this assembly's input, or plan for a simple adapter if needed.

Can I return this if the lens doesn't match my expectations in person?

Check ModSupply's return policy for the specific window and condition requirements. Since this is a smoked finish, inspect photos carefully before purchasing if color match is critical.