Has anyone experience of this arrangement with this bock?


I am unable to get the brakes to bleed. When the pump is activated the pedal comes up rock hard with no travel. I can get one circuit to bleed usig the pump pressure, but the other circuit will not bleed because there is no pedal travel.

I removed the block and can see that the front port on the cylinder is ported to the rearmost connector (red line), the second port goes to the front pipe connector ( Blue), the third port (yellow) goes to the middle connector which is the larger pipe fitting, and the last port on the cylinder is blanked off.
The only way to get pedal travel is by releasing pressure on the rear pipe connector (red line).
I think the front brakes should be on the blue connector and the rears on the red, but me well be wrong.
So does anyone know how to connect this without the ABS control unit?
I do have an ABS unit which bolts on to the master cylinder in place of the block, but my understanding is that without the ECU and the rest of the ABS controls the valve block defaults to a closed position thus preventing the rear brakes to work.
Any help much appreciated.