SteveFMk1

When i changed mine i had the back wheels up on ramps and un screwed it with the manifold still attached. Engine lid was removed to let more light in and easier to reach the multi connector. If you put your hands down above the gearbox, move the cable out of the for the temp gauge and reversing light switch, the only other in that area will be the lamda cable with a multi block connector with 4 wires.
Good luck