Plug connectors on a car radio (Skoda Fabia 5J)

Multi-pin plug connector "A", sixteen-pin, two-piece

1 - loudspeaker + back to right; 2 - loudspeaker + front right; 3 - loudspeaker + front left; 4 - loudspeaker + rear left; 5 - loudspeaker - back to the right; 6 - loudspeaker - front right; 7 - loudspeaker - front left; 8 - loudspeaker - rear left; 9 - "CAN-BUS" of the "Comfort" system (high); 10 - "CAN-BUS" of the "Comfort" system (low); 12 - clamp 31; 13 - control signal; 14 - external control; 15 - clamp 30; 16 - terminal 30 - (anti-theft device control signal, "SAFE")

Multi-pin plug connector "B", twelve-pin

• 1 - AUX input, left channel
• 2 - AUX audio "ground"
• 3 - CD changer, audio "ground"
• 4 - CD changer, power supply, clamp 30
• 6 - CD changer, DATA output
• 7 - AUX input, right channel
• 8 - CD changer, left channel, CD/L
• 9 - CD changer, right channel, CD/R
• 10 - CD changer, control signal
• 11 - CD changer, DATA input
• 12 - CD changer, CLOCK

Multi-pin plug connector "C", twelve-pin

• 6 - input signal for telephone, TEL -
• 10 - mute (telephone operation)
• 12 - telephone input signal, TEL +

Important: Contact pins that are not indicated are not occupied.