Bmw n54 12v pre-crank help

[Charlieboy]

Hi Richard, I've tried tapping into the lpfp 12v wire but that only turns on once the engine has started unfortunately. I've just broke my fuse adapter so I can't try fuse 2 yet. I've ordered one and once it arrives I'll let you know how that work out. Fuse 2 say it's for the dash in my fuse booklet.
Is it essential for the controller and the gauge to power up before the engine is started? I only ask because the gauge does power up and the water level light flickers along with the flow lights if I press the accelerator. Also the green led in the controller flickers with the speed of the revs as well.