










Feature:
- Full Lights Synchronous Lighting: After installation, your vehicle’s high beams, low beams, fog lights and daytime running lights (DRL) work simultaneously when high beams are turned on, maximizing road illumination and driving safety at night, rainy or foggy days.
- Original Car Function Reserved: When high beams are off, low beams and fog lights maintain normal factory working mode, no function loss, no conflict with original vehicle circuit system.
- Simple Plug & Play Installation: Zero cutting, zero wiring modification, zero damage to original car harness. Just replace 4 original relays to complete installation, no professional tools or experience needed.
- Premium Durable Material: Adopts high-standard FR-4 PCB board, featuring high temperature resistance, corrosion resistance, strong stability and long service life, not easy to deform or fail in harsh driving environments.
Application:
Material: FR-4 PCB
Compatible with 2003-2007 Chevy Silverado GMC Sierra 2500/3500 Classic
Installation Method:
Find the fuse box and pull out 4 relays labeled Fog Lp, Hdlp Low, Hdlp Hi, Drl. Put down the circuit board and reinstall these relays back to their original positions. No need to modify existing wiring.
Package Include:
1 x high performance all the lamps on module.

