Just bought my first ford, a 07 f150 with a 5.4l. It did not come with the automatic headlights so I want to add them. I've read a few posts about 2011+ and 2003 and below but didn't find any information for the 04-08.

I purchased the switch with the automatic setting and on the dash there is already a bump with a red flashing security light. I have manual A/C, column shift, no keypad on door. What else do I need? The switch alone didn't do the job

 

Ford does have 2 different listings for the sensor, but they look to have the same part number.
Amplifier AssyPart#: 13A018Usages: 06/02/2003 - 08/18/2008, F150/Mark LT, With Conventional Headlamp Control
Sensor AssyPart#: 13A018Usages: Sun Sensor, 06/02/2003 - 08/18/2008, F150/Mark LT, With Automatic Headlamp On/Off