I haven't gone out and checked mine on my 03 but most double cardon joints like the one in the picture have a ball and socket setup in between the two universal joints. If you look closely at the middle section in between the u-joints you should see a small disc about 1/4 to 3/8" in diameter with a small hole in the middle of it about as big as a pencil lead or a little smaller. That small hole is where the grease goes. You need a needle fitting to grease this. A Napa, Carquest, etc. will probably have these and they come in a couple of styles. One that snaps on the end of the existing fitting on your gun and another that actually screws on the hose itself.