An electronically controlled hydraulic unit (10,15) for use in an anti-lock braking system in an automobile. A coil mounting assembly of the unit (10) includes a wiring or printed circuit board (48), on which toroidal coils (16) are mounted with traces leading to pin terminals (46) to attach this wiring or printed circuit board subassembly to an electronic control board (56). The coils are soldered to this board (56) in a conventional offline soldering operation. The coil wiring or printed circuit board (48) is mounted to a peripheral housing frame (34) and a peripheral seal (42) is located between the wiring or printed circuit board (48) and the housing frame (34). The printed circuit board (48) serves as a sealing bulkhead when mounted between the electronic control board (56) and a hydraulic pump subassembly.