trigger wheel
 

what kind of crank trigger wheel is C30 using

not sure what you mean by crank trigger wheel. Do you mean the crankshaft position sensor which tells the ECU where in its rotation the crankshaft is? The CPS is a hall effect sensor - where a permanent magnet is swiped by a coil in the sensor to read the position. The CPS should be somewhere by the transmission on the C30 (reading off the flywheel??) but you can probably find a video on Youtube to help locate it.