I assumed full size truck?
1989 Chevrolet Truck Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blu
need to know what color wires hook to what color wires on an after market radio wiring harness have literly spent 8 hours trying to figure this stuff out and cannot so please help if possible
You have the info above.
Don't you have the radio harness diagram for the new radio?
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89 Chevy Silverado, power to radio but will not change station and no sound.
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