I got in my 2005 F150 K.R. last week and my auto headlights didn't come on. They work turning them on manually, but not auto. Before i get to carried away chasing this issue, I'm gonna check with the experts. Any advice? Thanks

 

Sensor on the upper dash....

 

What he said. Check for a replacement sensor. Middle top of dash, here ya go

Look at this on eBay:

http://www.ebay.com/ulk/itm/281813116147

BRAND NEW OEM DASHBOARD SUN LIGHT SENSOR FORD LINCOLN MERCURY #YF1Z-13A018-AA

 

Do the parking lights come on in the auto setting? If so, it is the BCM, or other names. It is behind the back seat. Mine fried the headlight wire., but parking still worked.

 

Thanks guys, I'll check the sensor, that sounds like the issue