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I need some help on wiring my o2 sensor. it has 4 wires and im kinda confuse on which one goes to which one. theres two black, one white and one green. I dont know which wire is suppose to go into the other pin. On the other side of the connector, the wire is different color. its like yellow and some other different color from the o2. NEED HELP ASAP becaues tomorrow is race day
 

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Thanks to pissedoffsol
http://www.hondaswap.com/forums/index.php?showtopic=33248

Wires on 4 wire O2:

WHITE: Signal Wire
GREEN: Signal Ground
2 BLACK: Both black wires are the heater circuit wires.

Using a P28 ECU (and should work for most obd1 ecu's with 4-wire controls)

Run O2 Sensor signal (white) To D14
Run O2 Sensor signal Ground (green) to D22 (or any good Ground)
Run O2 Sensor Heater Circuit Control (black) to A6
Run the other black heater circuit power wire to (A25) or any good switched +12VDC source.

(you may mix up the black wires... if car dies after it is warm/10-30 seconds, that's the first thing to swap over and troubleshoot.. theres no way to tell one from the other by looking at them)
 

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I think it got it fix. I let the car idle for more than 10 minutes and drove it for a while and no CEL or anything. The car now idle more softly and smoother. Thanks dog
 
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