1986 Dodge Ram 50 Car Stereo Wire Colors and Locations 1986 Dodge Ram 50 car stereo wire colors, functions, and locations 1986 Dodge Ram 50 Stereo Wiring. Home / the12volt's Install Bay / Vehicle Wiring / View all Dodge Vehicles / 1986 Dodge Ram 50 (1986 Dodge Ram 50 Stereo Information) 1986 Dodge Ram 50 Stereo Wiring: Constant 12V+ Blue/Black : 1988 Dodge Ram 50 | Stereo Wiring Diagram 1988 Dodge Ram 50. December 1st, 2015 Posted in Dodge Ram 50. 1988 Dodge Ram 50 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. Use of the information above is at your own risk.