I'm not sure that I have this exact model...
I'm not sure that I have this exact model as we bought the rack in 2007 but I suspect it hooks up to the hitch on your vehicle the same way--with a pin that has a keyed lock on it. I think I have a standard hitch which is what we bought the rack for. My husband has a heavy duty hitch on his truck and we discovered that the pin isn't long enough to go through his hitch and lock the other day. Is there a longer pin available or some kind of adapter kit for different sized hitches?