How the wires from the door 4 speakers connect to the radio?

The wires from the door speakers connect to the radio via the vehicle's wiring harness. Each speaker typically has two wires: one for positive and one for negative, which correspond to the output channels on the radio. The radio sends audio signals through these wires, allowing the speakers to produce sound. Properly matching the colors and connectors of the wires ensures that the speakers function correctly with the radio.