A form system is provided for forming a structural column assembly of the type used for erecting building structures and the like, such as a concrete column or footing formed in situ in an earthen hole. The solid-state switches are operated such that a voltage at the load is regulated by repetitively charging the capacitor causing a current to flow in the inductor and discharging the capacitor causing current to flow in the inductor. The bracket may be an integral extension of the wiper motor apparatus housing.