Will this mirror connect to my existing electrical harness?

Yes — this assembly uses factory electrical connectors. Plug directly into the existing mirror wiring on your Santa Fe with no adapter needed.

Do I need new hardware to mount it?

Mounting hardware is not included. Retain your existing fasteners from the old mirror — they'll work with this assembly's factory mounting tabs.

Can I replace just the mirror glass if it cracks later?

Replacement glass availability depends on future parts sourcing. For now, treat this as a complete assembly unit; individual glass replacements are not currently offered.