I have had this issue since I have owned the truck. The automatic headlights do not work, the headlights themselves work and when on the automatic setting they just stay off. This hasn't been that big of a deal but I would like to get everything working in my truck. I have checked all the fuses and have found nothing. I have checked all kinds of forums but to no avail, the next step for me is replacing the sunload sensor (ambient light sensor/light sensor) on the dash. However I cannot seem to find the part number or where to purchase the sensor. If anyone has had similar issues or can point me in the correct direction it would be much appreciated.

 

Here’s one of a number of threads

7L1Z-13A018-A