as viewed from underneath (colors from RJ-12 connector from left to right are white, yellow, green, red, blue, and black)
attach the switches
attach the diodes, using point to point wiring: the diode leads are just long enough to reach from top to bottom
strip some insulation from the green and blue leads of the RJ-12 connector, and string these leads through the switches
attach the rest of the RJ-12 leads (order in graphic's RJ-12 connector from left to right is white, yellow, red, black), arrange wiring so that bare wires are as far apart as possible, arranging wiring so that the RJ-12 is at the bottom and leads fit into the enclosure