Pontiac Coils global headquarters, located just north of Detroit in Clarkston, Michigan, is also the companys primary automotive manufacturing facility. From this facility, Pontiac Coil designs and manufactures a wide......Pontiac Coils global headquarters, located just north of Detroit in Clarkston, Michigan, is also the companys primary automotive manufacturing facility. From this facility, Pontiac Coil designs and manufactures a wide range of custom OEM electrical-mechanical devices, clutch coils and solenoids.