Where is FH1? Rear wheel speed sensor connector

[GuydLV]

Hi, I have the code C1165 code showing up for 'Wheel speed rear right input - circuit failure'. It apparently triggers the limp home mode.

A quick swap with the left rear wheel speed sensor followed by a reset and another read still shows the issue on the right side.

I am now trying to troubleshoot the wiring: RR2-1 and RR2-2 connectors from the sensor should arrive at FH103-43 and FH103-32 respectively by the DSC box. Unfortunately a multimeter test gives negative results.

So I guess it means something is wrong in between.

As the wiring diagram shows that RR2 connectors reach FH103 going through FH1, FH1 has become my next port of call.
The same diagram shows FH1 somewhere in the door panel, but I am not too sure where.

Am I proceeding the best way to troubleshoot the fault? If so, would anyone know how to reach that FH1 connector?

Thanks