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Tpi O2 sensor using headers

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Old 05-27-2014, 11:52 PM
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Tpi O2 sensor using headers

I have a BOSCH 4 wire universal O2 sensor and i need help with the wiring,
Black goes to the purple signal
Grey is the ground
White #1 goes to a 12v switched
White #2 Is where i need help, i read somewhere it goes to constant 12v source? would that drain the battery?

please help
Old 05-28-2014, 10:46 PM
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Re: Tpi O2 sensor using headers

checking back,,,,,,nothing guess i'll goggle research
Old 05-28-2014, 11:01 PM
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Re: Tpi O2 sensor using headers

its easy, the whites are the heater circuit. you ground one and +12v ign. sw the other

and like you said, grey goes to ground and black is signal.

i like to use a relay for power on heated o2 conversions
Old 05-30-2014, 06:30 PM
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Re: Tpi O2 sensor using headers

Originally Posted by mjdavis68
I have a BOSCH 4 wire universal O2 sensor and i need help with the wiring,
Black goes to the purple signal
Grey is the ground
White #1 goes to a 12v switched
White #2 Is where i need help, i read somewhere it goes to constant 12v source? would that drain the battery?

please help
Use the pink/blk wire at the EGR solenoid. IT works just fine there.
Old 05-30-2014, 06:31 PM
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Re: Tpi O2 sensor using headers

Originally Posted by steveo_
its easy, the whites are the heater circuit. you ground one and +12v ign. sw the other

and like you said, grey goes to ground and black is signal.

i like to use a relay for power on heated o2 conversions

You dont need a relay
Old 05-30-2014, 10:40 PM
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Car: 88 IROC Z/28-under re-construction
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Re: Tpi O2 sensor using headers

Thank you guys, and i will place a 10 amp inline fuse just in case
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