Soldering wires together

I was working on some electronic equipment.  It had to be modified to fit a different style plug.  The plug was actually two plugs.  To do the modification I had to solder two wires to the connector the plug went on.  The wires were cut to length and were orange.  There was also two yellow wires that had to be connected to the plugs.   I soldered the wires in place and it was a perfect solder job.  The solder was very shiny.