2006 Ford F150, High beams do not work. Low beams, fog lights, & Dash indicator all work, but High beams do not come on. Fuse for High beams seems to be good, swapped out relay for high beams and still no high beams. Help!?! Checked bulbs and even tried new ones, still no high beams. but everything else works fine. When the fog lights are on the high beam indicator on the dash comes on but its dim (not on with full brightness). If i pull the "flash to pass" the high beams do not come on but dash indicator shows highs are on. If i push the switch forward to turn on highbeams, the low beams go out and high beams do not come on but dash indicator comes on.

 

You need a voltmeter or a test lamp in order to logically diagnose this.

Is the truck equipped with autolamps or DRL?

 

Does the truck has any modifications to it ?
- Fog lamp mod, HID lamps, etc.