I will also add that it will be helpful to "tin" the ends of those wires (ie. apply solder so the individual strands aren't coming apart). I did this trick with my meter (except that I bought banana plug ends to solder on for the meter connection) and saw quite a large increase in my readings. In that link I just jammed in some 14 gauge home electrical wire. Since then I made my own test leads using regular 12 gauge wire. Also learned that one of my cheap meters is junk and should never be used for current readings.
-Garry