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In this 2,000+ word guide, we will dissect the , explaining every pin, wire color, voltage, and potential pitfall.
The rear of the RD4 N1-00 has two main connectors: and B (Brown 12-pin) . Some models have a third blue Fakra connector for GPS or diversity antenna. siemens vdo rd4 n1-00 wiring diagram
Note: Always verify with a multimeter. Factory colors vary by month and plant.
POWER (Black 16-pin): A1: +12V Battery (Red/Yellow) A2: Ground (Black) A15: Remote Out (Grey/Red) - Do NOT feed 12V in! : Some websites specialize in automotive wiring diagrams
DATA (Brown 12-pin): B1: CAN High (Purple) B2: CAN Low (Yellow) A9: SWC Data (Blue/Red)
| Pin | Wire Color | Function | Note | | :--- | :--- | :--- | :--- | | | Purple | CAN High (or VAN Data) | 2.5V – 3.5V active | | B2 | Yellow | CAN Low (or VAN Return) | 1.5V – 2.5V active | | B3 | White | AUX Right Input (Line-in) | Signal ground on B4 | | B4 | Shielding | AUX Ground / Screen | Shared with B6 | | B5 | Red | AUX Left Input | Line level (0.5V – 2V) | | B6 | N/A | Analog Ground | – | | B7 | Green | CD Changer Right Output | To trunk changer | | B8 | Blue | CD Changer Left Output | To trunk changer | | B9 | N/A | Microphone Input (+) | For factory hands-free | | B10 | N/A | Microphone Input (-) | For factory hands-free | | B11 | White/Brown | External Amp Trigger | 12V out when radio is on (use A15 instead) | | B12 | N/A | Diagnostic K-Line | 12V Rx/Tx (rare) | The rear of the RD4 N1-00 has two
207 (RD4) OEM Head unit + amp (wiring diagram) | aussiefrogs
Part B is often used by owners to add a 3.5mm jack or a Bluetooth receiver. Note that after wiring these pins, the AUX function may need to be activated via Diagbox software. : Audio Right (AUX 1) Pin 10 : Audio Left (AUX 1) Pin 11 : Audio Ground (AUX 1) CD Changer & Accessories (Part C)