Need help from experts (Never been done before on a Mustang)

[Jayeatspizza]

So I recently purchased a 2018 Mustang GT from an auction.

I noticed a rat had gotten to the main body wiring harness, so it needed to be replaced. I purchased one off of eBay, but it turns out the harness I purchased came off a factory-amplified Mustang GT (Upgraded Speaker Package), while mine is equipped with the base speaker package. There are no available harnesses in the part number sequence JR3T 14A005 AC available anywhere online besides Ford, which costs $1000+

When installed, everything works besides the speakers because they require the OEM amp. I cannot purchase the amp because there is a separate cable that comes from the dash that plugs into the amp (3 total: 1 from the dash harness (Black) and 2 from the body wiring harness (Brown and Gray).

Does anyone know how I can get my speakers to work without having to install an amp? Could I just run speaker wires from each speaker into the ACM (Audio Control Module)? If that's the case, how do I do so? What do I plug them into on the input side?

Thanks in advance, guys!

The 2 extra cables that are on the donor harness are in the image below, as well as the pin diagram for the two cables:

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[Craig Brown]

Just pay the money for the right wiring harness or take it to a shop and be done with it.

 

[Vinm57]

There are quite a few audiophiles on here, surely someone will have some ideas for you.
If you’re down to the speakers, you’ve got the heavy lifting done!! Good job…

 

[ORRadtech]

Two thoughts.
If you can read wiring diagrams get a factory service manual for your car. It will have diagrams for both base and premium systems. You could then compare them and maybe find a work around.
Also, there is a section in the forum dedicated to the audio system. Maybe post in that section.

 

[Cobra Jet]

How much was the auction car?

 

[horsepower addiction]

There are aftermarket amps that can be used. You can wire the base system to the speakers yourself or you could use an aftermarket system.

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