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Which wire do I connect AFR too?

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Old 11 August 2002 | 04:34 PM
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I've got a 1994 UK 5 door turbo fitted with a Dawes device. The fuel cuts off at 1.05 bar so I need to fit a cut off raiser which I have. The only problem is I need to monitor the fuel/air mixture to ensure I don't run too lean.
I've looked on the web & all of the advice I find is for newer or import models with a different ECU to mine so I'm clueless as to which of the miriad of wires to connect to. (I have six white wires with silver flecks).
Can I connect directly to the exhaust gas sensor just past the turbo if so, which wires? I have three from the sensor, red, black & white.
All help would be greatly appreciated.
Old 11 August 2002 | 06:34 PM
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the white wire is the signal,red(live) black(ground)

Old 11 August 2002 | 06:36 PM
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Cheers Johnny
Old 11 August 2002 | 09:39 PM
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Connect at the ECU end.
Looking at the ECU in the car the wire you want is B43 pin 6. It's the 4th wire from bottom, as 2 positions are unused.
And is coloured White with Silver stripes.

Old 11 August 2002 | 09:43 PM
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Thanks again Scott. I'd rather connect to the ECU end because it's easier to get at. The only problem, which may be irrelevant anyway, is that I also have to extend the wires on the meter to reach. Will this extra length of wire affect the signal to any consirable degree?

Paul
Old 12 August 2002 | 10:23 AM
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No effect.
My AFR is fitted in the ashtray, so only need about 1.5ft of wire to get to ECT.
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