1991 Dodge Ram W250 Car Radio Wiring Diagram - ModifiedLife Whether your an expert Dodge Ram W250 mobile electronics installer, Dodge Ram W250 fanatic, or a novice Dodge Ram W250 enthusiast with a 1991 Dodge Ram W250, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1991 Dodge Ram W250 vehicles are becoming increasing more difficult to identify Read More Read More Radio wiring diagram for 1991 dodge ram van - Answers radio wiring diagram for 1991 dodge ram van? answer. wiki user . black 7 way connector cavity 1 darkgreen/red power antenna or amp 12volt output cavity 2 brown/yellow left rear speaker + cavity 3 dk blue/white right rear + cavity 4 dk green left front + cavity 5 violet right front + cavity 6 brown/ lt blue left rear - cavity 7 dk blue 1991 Dodge Ram W250 | Stereo Wiring Diagram 1991 Dodge Ram W250. December 1st, 2015 Posted in Dodge Ram W250. 1991 Dodge Ram W250 Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Red Radio Accessory Switched 12v+ Wire: Red/White The stereo wiring diagram listed above is provided “as is” without any kind of warranty. Wiring Diagram For 1991 Dodge Ram Van Stereo – Readingrat This is the Wiring Diagram For 1991 Dodge Ram Van Stereo – Readingrat of a pic I get from the 2007 Dodge Caliber Radio Wiring Diagram package. You can save this pic file to your individual device. Please right click on the image and save the illustration.