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Old Jun 28, 2010 | 07:11 AM
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o2 for b2

hi

i've got Standart's (universal) o2.sens. with 4 wires

2 white
1 black
1 grey

which of these wire is cut ?? )) for my 3wired bronco2 '87

(original conference) - oxygen sensor - Ford Truck Enthusiasts Forums
 
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Old Jun 28, 2010 | 09:31 AM
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Here's a link. http://www.boschautoparts.com/Techni...sorInstall.pdf

According to that, the two universal heater wires are the white wires. So they will go to the grey/yellow and the black Ford wires.

The universal signal wire is the black wire. This will go to the darkgreen/pink Ford wire.

The universal ground wire is grey. Ford uses the exhaust pipe as a ground, so you do not need the grey wire.
 
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Old Jul 23, 2010 | 05:07 PM
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useful !!! thanx!!

but old o2 has 3 wires of diff. colors (((
(white, black, whitw with black strep)

so why ??
 
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Old Jul 23, 2010 | 10:49 PM
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Different manufacturers I guess. And since some of them use the housing of the o2 sensor as a ground, they only have 3 wires.
 
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