2012 prostar radiator fan clutch

Most are electric/magnetic engagement and some are air. If you have an air one, it is either on or off. The magnetic style is variable speed so it should be easy to tell what you have. Super easy to add fan override switch. You need to have an empty switch slot in your switch panel, then you need to buy the fan over ride switch and back light LED indicator bulb, remove the switch pack, pop out the blank cover, pop in your LED bulb and switch. Then you need to see someone with Diamond Logic Build software and have then add the fan override switch into the body controller for programming, and all done.