Rangerover p38 1996
Can anyone tell me what connector and wire colour the negative feed into the fusebox to feed relay 6 & 7 is so i can test it?

From what i can see it should be connector c112 on the becm, white light green wire.

I have put a multimeter on

Negative probe on wire white light green wire in connector c112
Positive probe on the fuse box positive.

I get a reading of about 2.5v and it climbs slowly to about 3v.

I have then measured the negative voltage from the negative white & pink ignition wire going into connector c256 of the becm by
Negative probe on the white & pink wire
Positive probe on the fuse box's positive power.

I get around 11.5v


If there was a fault with the hevac would the becm cut the negative supply perhaps or does this sound like a fault with the becm?

where do i go from here?????????