Ford Expedition

I have a 1997 Ford Expedition, about 157,000 miles, and 5.4l engine. My headlights stopped working all of a sudden. I have no high or low beams from the headlight switch on the dash, only when I pull the wiper stalk towards myself do they both engage. My vehicle is also equipped with fog lamps and auto dimming headlights. I am trying to find the location of the relays for the headlamps, as I have pulled every fuse and relay I can find under the hood and dash, and they all seem to check out.

Thanks in advance for any help!
August 25, 2007.

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