A pre-wiring apparatus, system and method is useful to provide a quick, efficient, and inexpensive way to install low voltage wire, and the like, between an electrical box and terminal locations during building construction. The apparatus includes bracketing, wire grommets, Sheetrock® tools, corner brackets, weatherproof stubs, and related trim elements to systematically provide non-detectable terminals for finished surfaces on interior walls and ceilings, and exterior walls. The method includes installing the terminal apparatus, running wire to selected locations, and finishing the terminal.