I have an Astra 1.6i GLS 16v and wonder if someone could just clarify which is cylinder 1,2 etc.. if i am facing the engine compartment are they numbered from left to right, or from right to left. ie. is the spark plug on the left number 1 or is it number 4? might need to change the HT leads i know the DIS module is numbered but just want to make sure that i connected each lead from the module to the correct spark plug.
Thanks in advance
du.