when I removed the c20xe from the astra I never disconnected the ecu loom from the engine (i.e. unplugged ecu at one end and multi pin socket at other end + battery lead) .

I cant remember whether there was seperate wires for the starter motor (power, earth).

Is this seperate or is it contained within the ecu loom.

dont want to wait until I turn the key before I find out whether it has to be wired up or not.

as you can imagine, in a nova its gonna be a c@nt to check