Combined Manufacturing Snow Plow Heater - Keep Your Engine Running In Cold Weather - Improves Oil Viscosity Snow Plow Heater Fits All Western Mark III, Uni-mount, Cable And Solenoid Operated Batteries Improve Viscosity By Allowing Pump Motor To Work Easier Helps To Prevent Freeze Ups Easy One Wire Installation, Draws Only 10 Amps Warms The Oil, Makes It Easier For Electric Motors To Keep Working During Snow Storms