First post on here. I am trying to fix my stereo, my friend said he knew how to install my audio system and now my head unit wont turn off with the truck. I have to manually turn off the stereo. I need to get a hold of a wiring diagram of the radio and figure out what he messed up. Any Help is much appreciated. I have a 2004 TB. Mike. If you own a 2004 Chevy Trailblazer and are looking to upgrade or repair your radio system, having a wiring diagram is essential. The radio wiring diagram provides a detailed map of the electrical connections and allows you to install an aftermarket radio or troubleshoot any issues with the existing system. The 2004 Trailblazer radio wiring.
Our comprehensive 2004 Chevrolet Trailblazer radio wiring diagram shows you all the radio wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2004 Chevrolet Trailblazer head unit pin-out guide to help you with your car radio troubleshooting and installation needs.. The 2004 Chevy Trailblazer Stereo Wiring Diagram is an essential tool for anyone looking to install a new stereo in their Trailblazer. With its simple and easy-to-follow instructions, it can help make the installation process quick and painless. The wiring diagram shows how the wires are connected between the main components of the vehicle.