Brighten up your driving experience with this simple upgrade inside your fuse box. Simply install the GM All Lights On Module to allow your high-beams, low-beams and fog lamps to simultaneously illuminate the road ahead. Once installed the GM All Lights On Module will turn on the high-beams, low beams and fog lamps when you turn on your high-beams. When the high-beams are NOT turned on your low-beams and fog lights will function normally.
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2003-2007 Classic 2500-3500 Silverado/Sierra - or - if your fuse box is laid out like the one shown below
1. Remove the relays labeled: FOG LP, HDLP-LOW, DRL, HDLP-HI
2. Lay the GM All Lights On circuit board in the location shown below
3. Reinstall the four relays back into their original location
USPS is the cheapest and slowest shipping method- USPS calls it Prioirty 2 Day - Transit time using this method can be up to 7 days