Need help with factory speaker wiring

[Chase Morse]

Hi I just bought a new to me truck and the previous owner messed around with the wiring and nothing is what its supposed to be, and the radio doesnt work. So i decided I would get a new head unit and run completely new wires, and my speaker has 4 terminals, and i get any combination to work. The head unit is all set up and it works, and i connect it to my phone to test the speaker, but i can't get anything to work, any advice? Much thanks in advance.

 

[Chase Morse]

I have it hooked straight up for testing purposes and nothing

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[bucket]

Try another speaker. Also make sure you have the balance/fader adjusted so that speaker channel will be functional.

 

[Turbo4whl]

I have it hooked straight up for testing purposes and nothing

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Did you hook up an antenna?