Renault Trafic 3 Wiring Diagram Online
The diagram will show that you MUST use a "CAN bus compatible" bypass relay . The UCH monitors current draw. Without the relay, the van will think a bulb is blown and cut power to the circuit.
Many owners sell digital copies of the OEM "Renault VISU" or "RENAULT CLIP" wiring documents. Ensure the file contains "X82" in the title. Renault Trafic 3 Wiring Diagram
ECU pinouts, fuel injection, and ignition. The diagram will show that you MUST use