1994 Chevrolet Suburban Car Stereo Wire Colors and Locations Disclaimer: * All information on this site ( the12volt ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information. 1994 Chevrolet Suburban | Stereo Wiring Diagram 1994 Chevrolet Suburban Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Orange Radio Accessory Switched 12v+ Wire: Yellow Radio Ground Wire: Black 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. Leave a Reply.