Earths

Can anyone point me in the direction for all the earths on a 20v turbo?thanks Dan.

Main chassis earth is just in front of the battery tray, connection there for battery earth lead, chassis and gearbox.
Rear of the engine there's an earth lead from the loom to the gold coloured plenum support bracket, loom earth poiny on the rocker cover under coil pack cover for ignition coils.

Thanks ive checked the main that was ok,ill check the other two as my problems started after lowering the front subframe when i were doing a few jobs,thought i may have pulled or damaged something.