my car has front electric windows with driver one touch control, perhaps if you have just classic electric windows there is a difference (less wires)
the only solution is to disconnect the cable from the socket and to find with a multimeter the 12V after contact, and then solder a wire between it and the led (on the PCB)
12V after contact is generally yellow on renault, but i'm not sure, you had better check
your PCB is different from mine ?