Which wire color going to ECU from MAP sensor on Chevrolet Cavalier Z24 , 1988 , 2.8L?

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Bogdan B

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Which wire color going to ECU from MAP sensor on Chevrolet Cavalier Z24 , 1988 , 2.8L , thank's
 
There's only three wires, supply power, ground, and signal which is the one you are looking for, I guess. If you don't have access to a wiring diagram, did you visit a dealer and ask as they will give it to you, use a voltmeter and touch any two wires with the sensor unplugged and the ignition on, when you find two wires that give you +5-6V DC, you have found the supply and the ground. The other is the signal. Usually the power is pink with black stripe and the ground is black.
 
A: Purple sensor ground
B: Light green sensor signal (Middle terminal of MAP sensor)
C: Gray with Red stripe 5 Volt Reference
ABC are on plug of harness.
 
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