![]() Always verify all radio wire, stereo wire colors and wiring information before applying it to your 2003 GMC Sierra 1500. Use of this 2003 GMC Sierra 1500 stereo wiring guide is at your own risk. Find your 2003 GMC Sierra 1500 speaker size and speaker location below! Applicationįeel free to use any 2003 GMC Sierra 1500 radio wire diagram that is listed here but keep in mind that all information here is provided as is without any warranty of any kind. It also shows you where your 2003 GMC Sierra 1500 speakers are located. Our 2003 GMC Sierra 1500 speaker size guide shows you the exact measurements and what speaker fits in your car. Knowing your 2003 GMC Sierra 1500 speaker sizes makes it simple to install new car speakers. Use a Speaker Wire Harness for easy Speaker Installation!Ģ003 GMC Sierra 1500 Speaker Size and Location Upgrade your Tweeters for cleaner audio highs! Upgrade your Center Speakers for awesome sound! Find your 2003 GMC Sierra 1500 speaker wire below! Application It also shows you what car speaker wire to use, which car speaker wire is positive and more. Our 2003 GMC Sierra 1500 speaker wire guide shows you how to connect car speaker wires and helps you when your car speaker wire not working. 2012 Silverado 3500 dually, 6.0l, crew cab, long box replaced w flatbed. 2004 Sierra 3500 dually, 6.0L extended cab, cab&chassis flatbed, upgraded to 4wd. Knowing your 2003 GMC Sierra 1500 speaker wire colors makes it super easy to replace your car stereo. get a short term subscription to the full-service manual, it'll have the wiring diagram for it. Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.Ģ003 GMC Sierra 1500 Speaker Wiring Guide Use a Car Radio Wire Harness and Car Radio Dash Kit for an Easy Install! Run a wire to the fuse box or ignition switch harness for switched power. The radio harness does not provide a switched power source. Finally, you can begin to enjoy your new sound system. Next, adjust the equalizer settings, and establish ground amp gains. Then verify that your antennas are properly connected. After powering up the unit, check your voltage supply. ApplicationĬar Radio Battery Wire (Constant Power 12v+)Ĭar Radio Accessory Wire (Switched Power 12v+) Initial Testing Before turning on the radio, double check all connections. It also shows you the car radio wire to battery, which wire is positive, what is car radio illumination wire and more. Our 2003 GMC Sierra 1500 radio wiring guide shows you how to connect car radio wires and helps you when your car radio wires not working. Knowing your 2003 GMC Sierra 1500 radio wire colors makes it easy to change your car stereo. 2003 GMC Sierra 1500 Radio Wiring Diagram GMC Sierra 1500 2002 ALL WIRING DIAGRAMS.
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