Home >> Buick >> 2018 >> Encore Preferred, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting System - Schematic Wiring Diagrams >> Schematic Wiring Diagrams >> Headlights/Daytime Running Lights (DRL) Wiring Schematics (Buick) >> Left Low and High Beam (Buick with T4L)