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Discussion Starter · #1 ·
I've had to replace the o2 sensor in my 99 beta tiburon recently with a universal bosch unit. Well, Its easy to guess which wires were for the heater... but I dont know which of the 2 wires left are for the signal or for the ground that go to the ecu. On my car I believe the yellow and red wires are for the heater and I believe the black wire is for the signal and the grey is for ground. Is this correct?
 
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