The WARN 34977 12 Volt contactor comes industrial grade and as a triple coil contactor. The 12 volt contactor, series wound, with bracket for cover is intended to fit WARN industrial winches. Depending on your mounting bracket, you may need WARN-34971. For the following WARN Industrial Winch Models: Series 9 DC, 12v, Series 12 DC, 12v, Series 15 DC, 12v.