[RustyPile]

Unless the wire color changes before it gets back to the computer, you should be able to determine wire color at the sensor end of it.. PSI should be able to provide the pin location and wire color information...

The following is a bit of a stretch but will provide a positive way of getting the signal back to the computer, and also will determine whether or not problem is in the harness... Make up a long jumper test lead with the proper sensor plug on one end and computer connector pins on the other end.. When you have the pin location info in hand, simply remove the sensor pins/wires from the computer plug and install the jumpers..