: Always disconnect the negative terminal before modifying the wiring to avoid shorting the CAN-bus.
The main power and network connector is typically a black 18-pin rectangular plug. Pin numbering is usually stamped on the plug face. View from the (back of the connector, looking at the pins). Magneti Marelli Rt3 N3 Wiring Diagram
The RT3 is a from the screen. The screen connects via a proprietary 6-pin or 8-pin LVDS (low-voltage differential signaling) cable or a specific RGB cable. : Always disconnect the negative terminal before modifying
: Because the RT3 unit contains an internal hard drive and powerful processor, the external cooling fan (Pins 1 & 7 of Part B) must be functional to prevent the unit from rebooting due to heat. View from the (back of the connector, looking at the pins)
The "N3" designation typically refers to the software version of the unit, often found in later Peugeot 407, 607, and Citroën C5/C6 models. While the physical connectors (the plugs on the back) often look identical between an N2 and an N3 unit, the can differ.
The "N3" typically refers to the firmware version or a specific hardware revision of the RT3 unit, not a completely separate wiring standard. The RT3 is a telematic unit combining radio, navigation (often HDD or CD-based), vehicle parameters, and sometimes a telephone.