Abstract: A method of providing multiple headlamp configurations sharing a common vehicle-mount interface, including selecting one of at least two reflectors, the at least two reflectors sharing a common forward interface and the common vehicle-mount interface at a rearward interface, with each having a different reflector shape; affixing the selected reflector to a rear portion of a bezel shaped to conform to the common forward interface of the at least two reflectors; and affixing one of at least two lamp bezels to a forward interface of the bezel, wherein the at least two lamp bezels share a common rear portion shaped to conform to the common forward interface of the bezel, and are shaped differently at their respective front portions.

Abstract: A method of providing multiple headlamp configurations sharing a common vehicle-mount interface, the method comprising: selecting one of at least two reflectors, the at least two reflectors sharing a common forward interface and the common vehicle-mount interface at a rearward interface, with each having a different reflector shape; affixing the selected reflector to a rear portion of a bezel shaped to conform to the common forward interface of the at least two reflectors; and affixing one of at least two lamp bezels to a forward interface of the bezel, wherein the at least two lamp bezels share a common rear portion shaped to conform to the common forward interface of the bezel, and are shaped differently at their respective front portions.

Abstract: A method for tightening a screw utilizes a power-impact or pulse driver. The prestressing force in the screw to be tightened is increased step-by-step during the tightening operation and evaluated. By detecting the prestressing force in the screw on a step-by-step basis, the step heights pertaining to the increase in the prestressing force and the change in the step heights are used as criteria for the screw-coupling quality and for controlling the screw-coupling operation. In the same way, the number of impacts or pulses is also used as a criterion for the screw-coupling quality and for controlling the screw-coupling operation.