Will these fit my factory halogen headlights?

Yes — these are designed specifically for factory halogen models. If your vehicle came with HID or LED from the factory, these won't be compatible.

Do I need to modify wiring or the headlight bucket?

These mount at the factory headlight attachment points. Test-fit before committing to any drilling or custom brackets — standard mounting should work without modification.

Do these need paint or primer before install?

The chrome finish comes ready to install. If you plan to repaint or modify the housing, degrease and prep the surface before any paint application.