Amazon.com: Yctze Car Smart LED Daytime Running Light Dimmer Automatic On Off Controller for DRL Controller Daytime Running Light Controller DRL Dimmer DRL Relay Harness DRL Control : Automotive
Dimmer circuit using SCR - TRIAC - ElecCircuit.com
Star Lighting Introduces Circadian System for Automatic, Programmable Color Temperature & Dimming Controls — LED professional - LED Lighting Technology, Application Magazine