Ambient Light Sensor
Headlights DRL Schematics - Cell 102: Headlamp Switch, Ambient Light Sensor and BCM:
Exterior Lights Schematics - Cell 110: PARK LP Fuse and Headlamp Switch:
Interior Lights Schematics - Cell 114: Headlamp Switch and HDLP SW, PARK LP Fuses:
Interior Lights Dimming Schematics - Cell 117: Headlamp Switch: