A mounting system (51, 80, 101, 121) for facilitating ordered mating of plural connectors, said mounting system (51, 80, 101, 121) comprising: plural connectors (81-1, 81-2, 81-3, 81-4); a bracket (13, 15, 53) comprising a feature (23A, 23B, 25A, 25B, 63A, 63B) for securing said bracket (13, 15, 53) to a pole or wall; a plate (57, 57', 107) connected to said bracket (13, 15, 53), said plate (57, 57', 107) having plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) therein, wherein each of said plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) has an inner perimeter shape formed in said plate (57, 57', 107), which is different than the inner perimeter shapes of the other mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4); and characterised in that: said plural connectors, comprising a plurality of first connectors (81-1, 81-2, 81-3, 81-4), each first connector (81-1, 81-2, 81-3, 81-4) comprising: a first threaded portion, a second threaded portion that is adjacent to the first threaded portion, a stop flange adjacent to the first threaded portion, and a first nut threaded onto the first threaded portion and abutting the stop flange, said first nut comprising an outer perimeter that seats into one and only one of said plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) of said plate (57, 57', 107) and that has a shape that is unique as compared to first nuts of other first connectors (81-1, 81-2, 81-3, 81-4) of said plurality of first connectors (81-1, 81-2, 81-3, 81-4); wherein each first connector (81-1, 81-2, 81-3, 81-4) of the plurality of first connectors (81-1, 81-2, 81-3, 81-4) is securable to the plate (57, 57', 107) by sandwiching the plate (57, 57', 107) between the stop flange of said first connector (81-1, 81-2, 81-3, 81-4) and a second nut threaded onto the second threaded portion of said first connector (81-1, 81-2, 81-3, 81-4). plural connectors (81-1, 81-2, 81-3, 81-4); a bracket (13, 15, 53) comprising a feature (23A, 23B, 25A, 25B, 63A, 63B) for securing said bracket (13, 15, 53) to a pole or wall; a plate (57, 57', 107) connected to said bracket (13, 15, 53), said plate (57, 57', 107) having plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) therein, wherein each of said plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) has an inner perimeter shape formed in said plate (57, 57', 107), which is different than the inner perimeter shapes of the other mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4); and characterised in that: said plural connectors, comprising a plurality of first connectors (81-1, 81-2, 81-3, 81-4), each first connector (81-1, 81-2, 81-3, 81-4) comprising: a first threaded portion, a second threaded portion that is adjacent to the first threaded portion, a stop flange adjacent to the first threaded portion, and a first nut threaded onto the first threaded portion and abutting the stop flange, said first nut comprising an outer perimeter that seats into one and only one of said plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) of said plate (57, 57', 107) and that has a shape that is unique as compared to first nuts of other first connectors (81-1, 81-2, 81-3, 81-4) of said plurality of first connectors (81-1, 81-2, 81-3, 81-4); wherein each first connector (81-1, 81-2, 81-3, 81-4) of the plurality of first connectors (81-1, 81-2, 81-3, 81-4) is securable to the plate (57, 57', 107) by sandwiching the plate (57, 57', 107) between the stop flange of said first connector (81-1, 81-2, 81-3, 81-4) and a second nut threaded onto the second threaded portion of said first connector (81-1, 81-2, 81-3, 81-4). said plural connectors, comprising a plurality of first connectors (81-1, 81-2, 81-3, 81-4), each first connector (81-1, 81-2, 81-3, 81-4) comprising: a first threaded portion, a second threaded portion that is adjacent to the first threaded portion, a stop flange adjacent to the first threaded portion, and a first nut threaded onto the first threaded portion and abutting the stop flange, said first nut comprising an outer perimeter that seats into one and only one of said plural mounting positions (59-1, 59-2, 59-3, 59-4, 109-1, 109-2, 109-3, 109-4) of said plate (57, 57', 107) and that has a shape that is unique as compared to first nuts of other first connectors (81-1, 81-2, 81-3, 81-4) of said plurality of first connectors (81-1, 81-2, 81-3, 81-4); wherein each first connector (81-1, 81-2, 81-3, 81-4) of the plurality of first connectors (81-1, 81-2, 81-3, 81-4) is securable to the plate (57, 57', 107) by sandwiching the plate (57, 57', 107) between the stop flange of said first connector (81-1, 81-2, 81-3, 81-4) and a second nut threaded onto the second threaded portion of said first connector (81-1, 81-2, 81-3, 81-4).