the terminals should be numbered if not wire all plugs with the wires in the same locations
to connect the wires hold the soldering gun against the side of the terminal and fill each terminal. tin the end of each wire. make sure you install the plug cover on the cable then holding the soldering gun against each terminal until melted and plug wires into molten solder. leave covers back so you can match colors to sockets and wire sockets in the same manner.
if numbered write down number and color for each number.
steve