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Wiring Diagrams for FCA Vehicles (Chrysler, Jeep, Dodge, Fiat)

Bench wiring diagrams for FCA NGC4, NGC4A, GPEC, GPEC2, GPEC2A, GPEC3, GPEC4 and GPEC4LM ECUs, tested with ECU Hero, plus power supply tips.

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ECU wiring harness connector with a red locking lever

These bench wiring diagrams are exactly what we use for FCA ECUs, and the recommended ones to use if using our ECUHero flashing software. 
Vehicles that are fitted with a secure gateway module (SGM) will also need to either bypass the gateway or put the ECU onto the bench to allow communicating with it.

Each of these bench looms have been tested using various factory and aftermarket programming applications including our very own ECUHero.

The recommended power supply to use is something between 14-15volts that provides at least 2amps (2000ma) to ensure sufficient power is delivered during programming procedures. A very common supply is the belker charger as found here on amazon: Belker Adjustable Power Supply 

NGC4 and NGC4A

NGC4 and NGC4A ECU bench wiring pinout

GPEC

GPEC ECU bench wiring pinout

GPEC2

GPEC2 ECU bench wiring pinout

GPEC2A

GPEC2A ECU bench wiring pinout

GPEC3

GPEC3 ECU bench wiring pinout

GPEC4

GPEC4 ECU bench wiring pinout

GPEC4LM

GPEC4LM ECU bench wiring pinout

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