BMW M57N M57N2 to GQ GU TD42 RPM signal module

BMW M57N M57N2 to GQ GU TD42 RPM signal module. 

This module will change signal from the ECU to the correct one for the GQ and GU TD42 instrument cluster.

Wiring description:

Green- ignition 5A fuse

Black-ground

Blue- RPM signal from the ECU pin53

Grey- RPM signal to the instrument cluster.