Magneti Marelli Rt3 N3 Wiring Diagram _best_ Jun 2026

For your workshop wall or toolbox, here is a text-based memory aid:

Before diving into the wiring, let’s clarify the hardware. The RT3 (Radio-Télématique 3) system was produced by Magneti Marelli (now Marelli Holdings) for the PSA Group. The "N3" refers to a specific hardware revision featuring:

If Pin 16 has power but Pin 2 is weak (corrosion), the unit will reset constantly. Magneti Marelli Rt3 N3 Wiring Diagram

: 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.

The main connector is divided into several parts. Below is the standard layout for the primary power and audio sections: Part A: Power and Data : Display power supply. Pin 10 : CAN High (or VAN Data). Pin 11 : +12V Switched Remote (Antenna/Amp trigger). Pin 12 : +12V Battery (Permanent Power). Pin 13 : CAN Low (or VAN Data B). Pin 15 : Display Ground. Pin 16 : General Chassis Ground. Part A: Audio Output (Speakers) Pin 1 : Right Rear (+) Pin 2 : Right Front (+) Pin 3 : Left Front (+) Pin 4 : Left Left Rear (+) Pin 5 : Right Rear (-) Pin 6 : Right Front (-) Pin 7 : Left Front (-) Pin 8 : Left Rear (-) Part B & C: Accessories Pin B1 : External Fan (+). Pin B3 : Microphone Input. Pin B4 : Right Audio AUX. Pin C7/C8 : Left Audio Line-in (Navigation/External). Pin C9/C10 : Right Audio Line-in (Navigation/External). Essential Installation Tips For your workshop wall or toolbox, here is

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).

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. : Because the RT3 unit contains an internal

The RT3 unit typically has on the rear chassis (often labeled A, B, C).