You have two options.
One is to use what they supply in the kit. In the kit are screw down ring connectors. They should be all copper with screws to accept the wires.
The other (and better) option is to buy ring connectors from Home Depot (or other similar vendor). Go down the electrical aisle and you should see heat shrink tubing, tie wraps, and ring connectors. The best are the solder versions.
Something that looks like this:
http://www.tnb.com/ps/fulltilt/index.cgi?part=T186R
Make sure you get it in the proper wire size for your wire. (that's #4 for the quick disconnect) Also, make sure you use heat shrink after you solder it on.
-JEE