Will this bolt straight to my steering column without modification?

Yes—this assembly mounts at factory steering column attachment points. No drilling or custom fabrication needed. Verify mounting bracket compatibility with your specific column before final installation.

Does this include the wiring harness and connectors?

This is the switch assembly only. You'll need to confirm your existing harness matches the connector type on this unit, or source an appropriate adapter if terminals differ from your original setup.

What if one function isn't working after I install it?

Test each circuit (lights, wipers, hazards) immediately after installation while parked. If a single function fails, the issue is typically a wiring connection or blown fuse rather than the switch itself. Check all wire crimp connections and fuses before assuming a defect.