Firehawk

Hi everyone, I have a Land Rover Discovery Series 2 Td5. A land rover guru temporarily removed the wastegate module sensor, and directly linked the wastegate vacuum hose to the air-intake pipe between the turbo and engine. (this was said to be ok, but I loose all power over 3000 RPM. I have bought a new sensor. (Attached a picture of it) , but have no way of telling which point gets connected to which pipe? Is it: Connection A --> Wastegate Connection B --> Air intake pipe between turbo and engine. Or the other way round?? Note: The sensor will now go in between and split the current vacuum hose in two to measure pressure on both sides. Anyone with a Td5, that would be willing to have have a look under their hood and take a photo for me or describe it. I would be very grateful. With thanks in advance.