Where are the wires for rear speakers in a standard 2000 Fiat Punto?

The wires for the rear speakers in a standard 2000 Fiat Punto can be found in the trunk of the car, behind the rear seats. They are typically located on the left side of the trunk, and are usually attached to a black plastic bracket. The wires are colour coded, with the positive wire being red, the negative wire being black, and the ground wire being brown.