I have a 94 chevy silverado 4x4. before I got the truck, someone wired a 3 position toggle switch under the steering column. it is wired in between a small gauge purple wire. It doesnt seem to do anything that I can tell, and the truck runs good. I dont have accesory or fog lights, and the purple wire goes into the wiring harness, like at one time someone was bypassing or testing something. just dont know what, and dont have a wiring diagram.. any help much appreciated.
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