Is it possible to install automatic headlights in a 2004 Ford Explorer?

I just purchased a used 2004 Ford Explorer, and I noticed that it does not have automatic headlights, but the manual shows that it is an option. Is it possible to install this later? It would help me greatly. Thanks in advance!Is it possible to install automatic headlights in a 2004 Ford Explorer?An after-market relay is available. Check with Ford if you can upgrade with factory parts; then go to AutoZone or O'Reilley.see if they can get.