Electrical Plug Identification

There are multiple different wiring scenarios that have existed over the years for Western Plows. In an effort to simplify the identification, we’ve taken some photos that show the different plug options to help you identify them. Other areas of our website will reference a “relay system” or “isolation module” system, and this will help you know what you have. If you have other questions please don’t hesitate to contact us.

PLOW APPLICATION	PLOW-SIDE PLUGS	TRUCK-SIDE PLUGS
9-Pin Relay System Straight Blade (Most Common Option) UniMount & Early UltraMount Plows (up to 2004)This system has 6 pins in the bottom row and 3 pins in the top row on the plow side. On the truck side, your plug will have 12 holes, but only 9 active pins.
12-Pin Relay System Straight Blade (Certain early 2000’s Chevy/Dodge Trucks Only) & V-Blade (All V-Blades) UniMount & Early UltraMount Plows (up to 2004)This system has 6 pins in each row on both the plow side and the truck side.
3-Pin 3-Plug Isolation Module System Straight Blade UltraMount Plows (2005 – 2013)This system has a large 2-pin plug for the plow motor, an 11-pin (both plow and truck side) for the lights, and a 3-pin (11-holes but only 3 active pins on the plow side, 3 pins on the truck side) plug for the solenoid valve controls.
7-Pin 3-Plug Isolation Module System V-Blade UltraMount Plows (2005 – 2011)This system has a large 2-pin plug for the plow motor, an 11-pin (both plow and truck side) for the lights, and a 7-pin (11-holes but only 7 active pins on the plow side, 7 pins on the truck side) plug for the solenoid valve controls.
Fleet Flex Isolation Module System – Current System used on all Wide-Out, Prodigy, HTS, MVP Plus, MVP 3 and 2014 and newer Straight Blade MidWeight, Pro Plow, and Pro Plus Plows. This system has a 4-pin (2 small 2 large) plug for the plow motor and plow control wires, an 11-pin (both plow and truck side) for the lights. Models with the new LED headlamps may have 16-pins in place of the 11-pin wiring.