Speaker is already in the car. I know it was not uncommon for older cars to only have 1 speaker wire especially with mono a/m radios. I just need to know if the black wire coming out of the radio needs to go to a ground or just let it hang. 66 GTO a/m radio. 1 yellow wire power a green speaker and then the black wire in question.
Last edited by 1950Mercury; 03-18-2024 at 12:23 PM.
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