Do these bolt straight to my factory cab light holes?

Yes. These mount at factory points — no drilling or brackets needed. You're working with existing holes and fasteners.

Will I need to rewire these, or do they plug in?

Wiring configuration not specified — verify connector type against your truck's factory harness before ordering to avoid surprises at install time.

Can I paint the smoke housing or does it need prep?

These come finished. If you want a different color, you'll sand and prep the housing yourself — treat it like any plastic automotive part before primer and paint.