Do these headlights require a new wiring harness or adapter?

Test-fit the connector before final install. If your truck's factory harness doesn't match, an adapter harness may be needed — confirm compatibility with your specific truck's electrical setup before committing to installation.

Will these bolt directly into the factory headlight buckets?

These are designed for DIY installation with basic hand tools. Factory mounting points should align — dry-fit first to verify fitment and confirm no drilling or modification is required.

Do the LED DRLs stay on when the high beams are active?

LED daytime running light behavior depends on your truck's body computer settings. Some vehicles automatically dim or disable DRLs under high beam; others run them simultaneously. Check your owner's manual or test after installation to confirm your specific truck's logic.