Nope, don't get that one as chances are high it won't fit... different headunits use different connectors. Are you buying the JVC unit new? It should come with a connector that plugs into it. Then go to Walmart and buy a universal wiring kit (http://www.scosche.com/products/productID/218
- I believe they sell Scosche products so this is what you'd need) that will work for your Jeep. What you'll do is plug the wiring kit into your factory radio connections and then connect the wires from the end of the connector that came with the JVC headunit to the wires on the new wiring kit. They will be color coded...and there are some wires that may not be used. Personally...it's MUCH easier to connect all those wires on your kitchen table rather than doing it inside the Jeep. Then once you get to that step in your Jeep...you just plug the connectors in.
I personally recommend soldering the wires together and using heat shrink tubing over them (remember to slide the piece of tubing on BEFORE you solder the wires together). That will ensure that you have good, tight connections. If you don't have access to a solder iron...you can also use butt connectors rated for the gauge of wiring the connectors are using. Make sure the connections are good and tight and don't pull out after being crimped.