Surf 1990 Turbo Sensor Pipes Diagram or Pic

I have a 1990 Surf - LN130 001844R GJMGX. I have had a new head and the mechanics have not put the sensor cables on the turbo correctly. The turbo fuel advnace doesn't kick in and the power is low. Tried most combinations but not working. Can't obtain a manual in Aus. Can I please have a picture of the sensor cables on another 1990 Surf or a diagram.

Thanks for your anticpated help.


Best regards

Richard