A mould end cap comprises a cap end portion engaged with an end of a mould body for a vehicle frame, a mould insert portion extending from the cap end portion and inserted in the mould body, and a hook portion provided at the mould insert portion and engaged with the mould body. In some aspects, a host may analyze a computing system including a plurality of computing resources to identify, for various tasks, dependencies between the computing resources. The electronic timing circuit is housed in the cap and includes schedule processing circuitry that defines the set of selectable timing schedules, and a set of outputs for issuing electrical signals at the expiration of the predetermined time interval.