Match Colors: Connect wires with the same color on the harness to each other. For example, match the yellow wire on the harness with the yellow wire on the car stereo. This ensures proper power connections.
Connect Power Wires: The red wire is usually the ignition or switched power wire, and the yellow wire is the constant power wire. Connect these to the corresponding wires in your vehicle's wiring.
Connect Ground Wire: The black wire is usually the ground wire. Connect it to the vehicle's metal chassis or a dedicated ground point.
Connect Speaker Wires: Match the speaker wires according to their colors. For instance, connect the white wire on the harness to the white wire on the car stereo for the front left speaker.
Secure Connections: Use crimp connectors or soldering to secure the connections