Many DIY installers are confused by the absence of a switched 12V wire. The RCD 310 receives a digital "wake up" signal via the CAN-Bus wires (Pins 11 & 12) when you turn your car key. If you are wiring this into an older car without a CAN-Bus gateway, you cannot simply ignore these wires; you will need a CAN-Bus Simulator Interface to trick the radio into turning on. Section B: Speaker Outputs This section connects directly to your door speakers. The RCD 310 is a 4x20W unit (standard) or 4x50W in some upgraded versions.
| Pin Number | Wire Color (Typical) | Function | | :--- | :--- | :--- | | | White | Left Rear Speaker (+) | | 2 | White/Black | Left Rear Speaker (-) | | 3 | Green | Left Front Speaker (+) | | 4 | Green/Black | Left Front Speaker (-) | | 5 | Yellow | Right Front Speaker (+) | | 6 | Yellow/Black | Right Front Speaker (-) | | 7 | Purple | Right Rear Speaker (+) | | 8 | Purple/Black | Right Rear Speaker (-) | Vw Rcd 310 Wiring Diagram
| Pin Number | Wire Color (Typical) | Function | Description | | :--- | :--- | :--- | :--- | | | Yellow | Battery Plus (+12V) | Constant power source (Unswitched). Keeps radio memory alive. | | 15 | Brown | Ground (GND) | Chassis ground connection. Essential for safety and signal clarity. | | 14 | - | NC | Not Connected. | | 13 | - | NC | Not Connected. | | 12 | Orange/Brown | CAN-Bus Low | Data signal for wake-up/sleep commands. | | 11 | Orange/Green | CAN-Bus High | Data signal for wake-up/sleep commands. | | 10 | Blue/White | GALA | Speed-dependent volume control signal. | | 9 | - | NC | Not Connected. | | 8 | - | NC | Not Connected. | Many DIY installers are confused by the absence
The Volkswagen RCD 310 radio system is one of the most reliable and popular head units found in models like the Golf 5, Golf 6, Jetta, Touran, and SEAT León. Whether you are upgrading from an older unit, installing an aftermarket amplifier, or troubleshooting a sudden loss of sound, understanding the VW RCD 310 wiring diagram is essential. Section B: Speaker Outputs This section connects directly
Unlike older, simple analog radios, the RCD 310 is integrated into the vehicle’s CAN-Bus data system. This means cutting wires blindly is a recipe for disaster. In this comprehensive guide, we will break down the pinout configurations, explain the function of every wire, and walk you through common installation scenarios. Before diving into the specific wires, it is crucial to understand the physical connection. The RCD 310 uses a Quadlock connector (sometimes referred to as a "mini-ISO" setup). This is a large, single rectangular block that plugs into the back of the radio.
(Note: Colors listed above are standard VAG codes, but always verify with a multimeter or wiring trace as harnesses can vary by manufacturer.)