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  #11  
Old 16-09-2016, 02:37 PM
Charlieboy Charlieboy is offline
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Default Re: Bmw n54 12v pre-crank help

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.
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  #12  
Old 18-09-2016, 11:09 PM
Richard L Richard L is offline
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Default Re: Bmw n54 12v pre-crank help

There is something very wrong if the water level light flicker with flow lights.

Take a picture of the controller with all the cable plugged in.
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  #13  
Old 25-09-2016, 05:20 PM
Charlieboy Charlieboy is offline
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Default Re: Bmw n54 12v pre-crank help

Hi Richard, I tried fuse 2 and it still won't power up pre crank which is weird as the dash power up once the key goes in. I've double double checked all the wiring to make sure I haven't done anything different to the drawings that came with the kit. I've got the correct drawings as well for the hsf4 3.1 which I have.
Here's a link to the photos of the controller and the gauge





Starting to lose my hair over this install lol.
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  #14  
Old 29-05-2017, 08:40 AM
Richard L Richard L is offline
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Default Re: Bmw n54 12v pre-crank help

Two conditions for not powering up:

1. Tank level is low
2. Gauge is switched off.

Do you have a digital voltmeter? You an take some readings for me to help with the diagnostic work.
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