can i put a front harness from an 06 silverado that has e-fans and foglights on my 03 truck that doesnt have neither?, i have everything for the foglamps except the harness, and i want to put e-fans on my truck too. any suggestions?

 

Not 100% sure, but you can get the fog lamps as a kit from GM so I'm assuming that the wiring is already there or the kit comes with a sub-harness, and guys have gotten the harness for the factory efans separately and wired it in, I'm sure that there's a part number floating around one of the GM sections...

 

you'll have to check the pinouts on the green connector sub assembly to see if they are the same between 2003 and 2006. If they are the same, then I say use it.