if its an 8v:
large blue or brown, 0.3 bar pressure warning switch -> side of head
large white, 1.8 bar pressure warning switch -> filter housing
small white, oil temperature -> filter housing
if its a 16v:
large blue or brown, 0.3 bar pressure warning switch -> filter housing
large white, 1.8 bar pressure warning switch -> filter housing
small white, oil temperature -> back of head
small black, coolant temp -> side of head x3