I have a Wingard open road sat dish. Take 2 of our Directv DVR boxes from home when we travel, one for front and one for the bedroom. When setting up do not connect receiver to sat dish just tv. Go into setup and change sat configuration. Wingard told me to use 02 - 3LNB (18 x 20), multiswitch and single (unless you have SWM). Select continue and connect cable to receiver. I have called Directv many time. I tell them I have taken my receivers from home and put them in our Rv and they have been very helpful getting them working. Seems the trick is not to attach the sat cable until you have configured for the Wingard dish.
If you want to support both receivers in a DVR ( record a show while watching another) you can add a SWM 8 Multiswitch. I bough mine on Ebay. The Wingard web site shows how to connect it. The single cable connection to each DVR supports 2 receivers (SWM like at home).
Gary & Jan
2015 Jeep Grand Cherokee