That is what I am going to do. I replaced the metal piece that hold the hole dash together, including the speakers. tried hooking those wires into the wiring that was on the jeep (the old speakers were cut and there is a rat nest under there). I couldn't find the right wires. I am building a soundbar in the next few day, and when I wire that up, I will also be wiring those dash speakers.
They just need to be straight wires up.