1997 Chevy pick-up meyers snow plow.12 wire switch in cab. looking for Snow Plow

[cactus jack]

Headlight Wiring Schematic? If you take plow lights wiring off and use truck wiring for headlights The lights work. But unplug truck wiring and put plugs for plow lights No head lights only parking lights work. If switch is for plow lights no head lights / switch for truck headlights / not working. Dose anyone know where to look or have a Snow Plow Headlight Wiring Schematic that shows a 12 wire switch ?