Hi, Im new to the forum and already I am faced with a bit of a problem, I recently done an engine conversion and hadn't noticed that I am missing a precat lambda sensor until I done a vagcom scan to return with open circuit. I rung up eurocarparts and checked with them and my engine (AUM) has definately got a precat and postcat lambda, checked on the ramp and I only have a post cat. I rung up the supplier for the engine and he says the connector should still be there as he did not cut it. But the problem is I cannot seem to find the connector. Can anyone point me in the right direction as to where the connector is or provide a picture please?