I've changed the turbo on my 2007 Skoda Octavia vRS diesel and have mixed up the 3 exhaust sensors there's an orange.black and brown ones but I forgot which goes where could anyone help as its doing my head in many thanks 

The Black is on the turbo unit

It's black and orange that I've mixed up and I don't know which one goes below the turbo into the manifold. .many thanks 

Yeah Black one into the turbo manifold the orange into the upstream end of the DPF

I was wondering because it's tightened up but the sensor is still loose

I appreciate all the help mate thank you