Good point, stick. I forgot to mention that!

Make sure you measure and cut the cable to length before soldering the ends!

You will want to wick a bit of solder into the ends of the cable. Put some flux on the cable (I use plumber's flux in the red and white tin from the home-improvement store)- you can just stick the end of the cable in it. Then you'll heat the cable with a torch or soldering iron, and put a LITTLE solder on the end of the cable.