Chrysler Repair: MAP sensor wiring help: 2.5L V-6, chrysler sebring, o2 sensors

Question
I suspect that I have a short between my MAP sensor and my ECU on a 1997 Chrysler sebring 2.5l v6. There are 3 connections to the MAP sensor and I tested them and only one comes up hot. I assume one of them is the ground and the other is the bad wire. How can I tell which one is ground so I know which wire to trouble shoot? I have come to this conclusion after a long battle with this car in which I have replaced the spark plugs, spark plug wires, EGR valve, all o2 sensors, distributor cap and rotor, had the head gasket professionally replaced and now have replaced the MAP sensor twice. My OBDII keeps telling me it is the MAP sensor so I believe that it is a short in the wiring. Sense there are 3 wires I assume (I am not sure if I am correct) that 2 are positives and one is the ground, so if I can find out what the ground is I can fix the short on the positive. Thank you for your time.

Answer
Hi Doug,
The black/light blue wire on pin A  goes to pin 43 and that is a ground wire not only for the map but many other sensors against which you would measure the actual signal voltage. The violet/white wire on pin B goes to pin 61 and that is the 5 volt wire that operates the sensor. The dark green/red wire on pin C goes to pin 36 and that is the signal wire, a variable voltage between about 0.5V and 4.5V that depends upon the pressure in the manifold.
So you can check those for continuity and also verify that the wires are not shorted to ground when you have both end of the harness unplugged and be sure that the signal wire varies in voltage as you rev the engine and that the 5V supply wire shows a steady 5V.
Roland