Power but no sound

[CGK_Tercel]

I have power but no sound coming from my deck but i think its because there are 4 positives and only2 negatives because its an old vehicle

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[KaeZoo 10+ year member]

That's probably it. It's a common ground system. You need to rewire the speakers.

 

[CGK_Tercel]

what if i just rewired my rear speakers into my amp and used the one negative set from the deck for the front speakers?