Understanding the Wiring Color Codes for Delco Car Radio Oct 07, 2013Understanding the Wiring Color Codes for Delco Car Radio Units and Accessories. Tan/Left front speaker power Gray/Left front speaker ground Light green/Right front speaker power Dark green/Right front speaker ground Brown/Left rear speaker rear speaker ground Dark blue/Right rear speaker power Light blue/Right rear speaker ground. Delco car radio 1992 model 16155011 wiring color codes - Fixya Delco radio wiring color codes. Check WWW2Volt. They have a lot of useful schematics for radio wiring. Feb 19, 2014 | GMC Jimmy Cars & Trucks. 1 Answer I need to know the color codes for a Delco #09383045 for a 2000 chevy S-10. The radio number has nothing to do with the wiring. Here is what the book shows.