There were two different wiring diagrams for Truck-Lite plow lights. One (the first version) used a 6 prong switch. The second later version used a 12 prong switch. Keep in mind the lights themselves were identical, it was just the wiring that was different. The 12 prong switch used headlight adapters that plugged into the existing vehicle headlamp wiring, to route the wires back to the 12 prong switch. Many of these headlight adapters are scarce.

Original Truck-Lite Wiring Diagram on the Meyer Products web site 6 prong - http://ww2.meyerproducts.com/upload/...9%20Kit%20.pdf

Original Truck-Lite Wiring Diagram on the Meyer Products web site 12 prong - http://ww2.meyerproducts.com/upload/...7033%20Kit.pdf


And finally, how Smith Brothers suggests wiring these lights - http://smithbrothersservices.com/sea...ht-wiring.html

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