4 wire o2 sensor

[dhcarss]

Does anyone have the wiring diagram for the 4 wire o2 sensor? I did a search for it but was unable to find it..

[dhcarss]

I guess not.

[PhydeauX]

These are for a bosch toyota 4agze 4 wire o2 sensor:

Black: Signal
Brown: Ground
Black - red stripe: Heater +12V from battery
Black - white stripe: Heater to ecu (switched to ground)

[dhcarss]

well I did a search on yahoo and found what I needed, the four wire o2 sensor from say a civic has 2 black wires, 1 white, 1 green, one of the black wires is the postive, the other black wire, (doesnt matter which one) is ground along with the green wire, then the white wire is the sensor wire for the computer.. runs much better now..

[carotman]

The 88-89 cars have 2 inputs, did you just sonnect them together like Tome Coleman did on www.ludespeed.com

[dhcarss]

no I used two o2 sensors in place of the original ones.