Radio wiring

2003 CHEVROLET CAVALIER
186,000 MILES • 2.2L • 6 CYL • 2WD • AUTOMATIC
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ACHOO987
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My car is a coupe. I have no sound.I don't have the outrageous amount they want for the wire harness and I'm trying to straight wire the radio. The original is 24-pin connector a1-12 and b1-12, a1 purple a2-a7 empty, a8 to a11 speakers a12 black (ground). B1 orange 12v+ b2&3 empty b4 gray b5 black b6&7 empty and b8 to 11 speakers. Have switch hooked up in fuse box.
May 17, 2019 at 9:09 PM
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SCGRANTURISMO
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Hello,

I have included in the diagrams down below the stereo wiring diagram for your vehicle's stereo. Please let us know if you need anything else. We're here to help.

Thanks,
Alex
2CarPros
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May 18, 2019 at 3:45 AM
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ACHOO987
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Okay, do I need to hook both grounds together with one on head unit? And i leave the purple alone? Any help is appreciated. This is driving me nuts. First radio that has ever kicked my butt. Lol.
May 18, 2019 at 6:30 AM
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ACHOO987
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It has a factory amp.
May 18, 2019 at 11:11 AM
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SCGRANTURISMO
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Hello again,

Yes, all the ground wires can be grounded to one spot. Make sure that the ground is clean, corrosion free, tight , and that you get good metal to metal contact. Also make sure to use good quality ring connectors for the ends of the wires. The purple wires are for computer lines going to the Power-train Control Module (PCM) or more likely the Body Control Module (BCM). Other than that everything you have in the original post looks good. Please let us know how it turns out.

Thanks,
Alex
2CarPros
May 19, 2019 at 12:08 AM