[C6NVS1]

Thanks Richard.

N274 is the other 'charge pressure control solenoid', Pin 50 ECU2 (aka T60b/50).

Understand the cut-off is only for failsafe condition, but my only other concern is the possibility that both the N75 and N274 should be wired in, as if it is just the N75 (and not the N274 also) are we going to have the right bank running on mechanical boost pressure, and the left bank running from ECU regulated (N274) boost pressure?

I just don't know if the ECU has the N75 and N274 talking to each other, and if one is cut, the other is cut also. Could this be why you had the diagram showing pin 4? Maybe pin 4 ECU1 is the signal link between N75 and N274 (PURE SPECULATION ON MY PART)?

I'm no expert on this, but suspect you (or someone on here) may know, or be able to find the answer.

Thanks.