You can if you rewire the lights between the lights and the switch. Otherwise, I don't think anyone has figured it out that I know of. There was someone here who used the factory wiring to put in his own after market fog lights. He mentioned something about leaving out the relay and the fog lights are always on, or are on when the parking lights are on. I'll have to search through a few threads to find that one.

This thread shows the wiring schematic for the fog lights. According to this, the fog lights should be coming on when the tail lights are on. But that is not the case. Maybe it can be rewired at junction A38, if we can find out where that is.

http://www.toyotatundraforum.com/ele...g-diagram.html

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2007 SR5 Crewmax 5.7L 4x4
Mods: nerf bars, Truxedo tonneau, radar detector power, fog lights, black billet grille, rear differential breather, parking sensors, Line-X, power tailgate lock, hood safety latch mod, one off driving lights behind grille, Pioneer NAV w/ OEM camera, Flowmaster 50 SUV dual/dual, blue LED dash lights, Volant CAI
All mod descriptions and pictures © 2007,2008 by Toxarch. They may be copied only for personal use and the mods may be done for non-profit only.