HERCOO Light Module for GM, 8 High Mod Fog lights Low High Beams & DRL Lamp On Simultaneously Compatible with Chevy Silverado GMC Sierra 1500/2500/3500 Classic 2003-2007

[Fitment] Compatible with 2004-2006 Cadillac Escalade, Tahoe, Yukon, 2003-2006 GMC Sierra 3500, Cadillac Escalade EXT, Chevrolet Avalanche 1500/2500, Silverado 3500, 2003-2007 Silverado 1500/2500 HD, GMC Sierra 1500/2500 HD, GMT 800 trucks, 2003-2004 Silverado 2500, Sierra 2500, 2003 2005-2006 Silverado/Sierra 1500 HD, 2007 Silverado Sierra 1500 2500 3500 HD Classic. [All The Super Bright Front Lamps On] This 8 high mod allows your low beams, high beams, fog lights and daytime running light to be on concurrently when turn on high beams. Greatly improve illumination on dark country road at night. It is especially perfect for use in harsh environments such as heavy fog and heavy rain to ensure your safe driving. TIP: low-beams fog lamps and DRL will function normally when the high-beams are not turned on. [High Quality] This little circuit board is made of FR-4 PCB materials, sturdy structure is safer to use, durable and well worth.. [Easy to Install] Just find your fuse box, pull out 4 relays labeled Hdlp-Hi, Hdlp-Low, Fog Lp, Drl. Lay down the circuit board and reinstall these relays back into original position. No modification needed, it took less than 5 minutes to install and works perfectly.. [Package list :] 1 x little circuit board high performance all the front lamps on module. Since order purchase date, email us if there's any issue before or after purchase; your case will be taken seriously.