A method for connecting a first fastener piece and a second fastener piece of a first and second fastener piece assembly in a fastener hole through a wall of a structure where the wall has an interior surface facing an interior of the structure and an opposite exterior surface facing an exterior of the structure, the structure having an access opening through the wall providing access to the structure interior from the structure exterior, the access opening being remote from the fastener hole, the method comprising: inserting a flexible cord through the fastener hole from the structure exterior where the cord has a length with opposite proximal and distal ends and the cord distal end is inserted through the fastener hole from the structure exterior to the structure interior, then a portion of the cord length is inserted through the fastener hole from the structure exterior to the structure interior causing the cord distal end to move through the structure interior and then causing the cord distal end to move through the access opening to the structure exterior where the portion of the cord length inserted through the fastener hole extends from the access opening through the structure interior to the fastener hole at the wall interior surface; attaching the first fastener piece to a fastener piece holder and then attaching the fastener piece holder to the cord; moving the fastener piece holder and the first fastener piece through the access opening and then through the structure interior guided by the cord from the access opening to the fastener hole in the interior surface of the structure wall; holding the fastener piece holder to the interior surface of the structure wall with the first fastener piece aligned with the fastener hole; connecting the second fastener piece to the first fastener piece from the structure exterior where the connected first and second fastener piece assembly extends through the fastener hole; and, removing the fastener piece holder from the structure interior. inserting a flexible cord through the fastener hole from the structure exterior where the cord has a length with opposite proximal and distal ends and the cord distal end is inserted through the fastener hole from the structure exterior to the structure interior, then a portion of the cord length is inserted through the fastener hole from the structure exterior to the structure interior causing the cord distal end to move through the structure interior and then causing the cord distal end to move through the access opening to the structure exterior where the portion of the cord length inserted through the fastener hole extends from the access opening through the structure interior to the fastener hole at the wall interior surface; attaching the first fastener piece to a fastener piece holder and then attaching the fastener piece holder to the cord; moving the fastener piece holder and the first fastener piece through the access opening and then through the structure interior guided by the cord from the access opening to the fastener hole in the interior surface of the structure wall; holding the fastener piece holder to the interior surface of the structure wall with the first fastener piece aligned with the fastener hole; connecting the second fastener piece to the first fastener piece from the structure exterior where the connected first and second fastener piece assembly extends through the fastener hole; and, removing the fastener piece holder from the structure interior.