Am in an RV with a wineguard traveler automatic satellite finder installed on the roof which is connected through the roof to my vip722 hd receiver. There two cables coming from the single satellite dome. Main output 1 and second 2. I have just arrived in Florida for a three month stay and the site I have will keep me from using the dome. Have purchased a HD Turbo dish with a tripod and want to hook it up to the cable on the roof. My question is how do I hook up the turbo with three lnb's to the only existing two input cables on the roof which I will disconnect and route from roof to turbo dish. Have an idea that I should use a three line split to the two going to my receiver. Any help would be appreciated. Never bothered to look when I disconnected my receiver at home. Thanks in advance.