MeyerPlows - Meyer Plow Main Wiring Harnesses Info Meyer Plow Main Harness Wiring Pin Outs. These are the "1 Piece Plug" and Universal Wiring Harnesses. The 1 Piece Plug made its debut with the MDII Mount. The MDII made it necessary to unplug EACH plow light, the 3 individual Coil wires, and the Motor Harness to remove the complete plow assembly. Meyer came out with the 1 Piece Plug. meyer plow wire harness | eBay MEYER SNOW PLOW DRL WIRE HARNESS 07138- NEW FOR SABER LIGHTS- DAYTIME RUN LIGHTS See more like this. USED MEYER SNOW PLOW TOUCH PAD HARNESS W/ POWER WIRES & TRUCKLITE HARNESS. Pre-Owned. $100. Guaranteed by Tue, Aug. 6. Buy It Now +$10 shipping. Watch. Meyer Snow Plow Wiring Harness 15748.