one more time rookie questions! about allarm & oil line

[key750]

Hi all (like always sorry for my english).

I have two problem today:

Oil line to front turbo have a small leak at hight revs and pressure.



Someone know what are the right torque for this screw? I don't whant damage hers thread :-(


Second problem:
Allarm led pulse tree times and manual say: "have a problem with bonnet or boot sensor".
Engine bonnet sensor are ok, I have controlled unconnecting wires.
Problem is this: the two wires connected to engine bonnet sensor have a negative signal. This say somewhere another sensor have active a ground signal. Boot bonnet have a sensor? where is???

Thank you