diagram

The repair manual I have is only for the standard Van, none with Dually's. I have a Chinook Motorhome that of course has dually's and need the diagram to do some maintenance. Either that or a name of a web site to find it. Thanks in advance.

Have a portion of the cluster diagram but not enough to solve an illumination problem for the speedometer. It's an orange wire going to a round connector with no power. Where does wire from? Any help is great thanks.