240sx back up lights

[nismodrag]

i have a '93 240sx convertible. i recently swapped out the Auto transmission with a '92 MT. In doing so, i never figured out which plug/wire, at the relay box, i'm supposed to hook up the back-up light sensor/plug to. btw, i wasn't able to use all of the plugs that came with the MT because some of the plugs didnt fit into the sockets on the relay box for some reason. Can u tell me exactly which wire, at the relay box, i need to hook it up to? Please specify which plug/harness, and what the wire color is, at the harness side, not the sensor/plug. Because i know which plug the sensor is coming from the transmission. I just need to know which wire to hook up to at the relay box. (i read somewhere that it was the green/orange wire but it didnt work for me). also, on the middle plug/harness, the wires from the plug aren't the same configuration as the wires on the harness side. (one wire slot on the plug is empty where there's a wire on the harness, and vice versa.) as you can tell, i dont have a FSM. i only have a Chiltons which is not helpful for this. please help

i hope i was specific enough David