A system for adjusting a path of a wire includes a precast pulley assembly having at least one precast pulley having at least first and second positions. The at least one precast pulley may be adjustable from the first position to the second position without a user touching the at least one precast pulley. A path of a wire is adjusted when disposed around the at least one precast pulley when it is in the second position instead of in the first position. In one embodiment, the precast pulley assembly includes first and second precast pulleys disposed in an adjacent relationship with respect to one another, wherein a wire can selectively pass over one or both of the first and second precast pulleys.