James, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester and making sure all of your fuses are not blown. If all of your fuses are good, your 1999 Cadillac Deville may have a factory amp that needs to be turned on by your after market radio. The car radio amplifier trigger wire has to be wired up to turn on your factory amplifier to output sound from your speakers. Double check that your 1999 Cadillac Deville amp turn on wire is connected. Hope this helps. Good luck with your 1999 Cadillac Deville stereo installation.
1999 Cadillac DeVille. Changed out the factory head unit. Everything works but no sound. Hope to find it needs a factory amp to work instead of my being sol.
101 thoughts on “Cadillac Radio Stereo Wiring Diagrams”
Darian, ask and you shall receive: 2003 Cadillac Escalade EXT Car Radio Wiring Guide
2003 Cadillac Escalade EXT Car Radio Installation Guide
James, first double check ALL your fuses and make sure ALL your fuses are good. You can do this by using an Automotive Fuse Tester
and making sure all of your fuses are not blown. If all of your fuses are good, your 1999 Cadillac Deville may have a factory amp that needs to be turned on by your after market radio. The car radio amplifier trigger wire has to be wired up to turn on your factory amplifier to output sound from your speakers. Double check that your 1999 Cadillac Deville amp turn on wire is connected. Hope this helps. Good luck with your 1999 Cadillac Deville stereo installation.
1999 Cadillac DeVille. Changed out the factory head unit. Everything works but no sound. Hope to find it needs a factory amp to work instead of my being sol.
Paul, ask and you shall receive: 1994 Cadillac Seville Factory Audio Wire Info