wiring air/fuel ratio gauge!?
07-30-2009, 08:05 AM
#3
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Join Date: Jun 2008
Location: Iceland
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07-30-2009, 03:12 PM
#5
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
That looks to be just an uncalibrated narrowband gauge. It will mostly just provide a lightshow with little to no tuning value.
The easiest sensor to tap is the passenger's side, it is a Gray/Light Blue wire at pin 5 of C133.
You'll need a 10mm socket to remove the M6 clamp screw that holds the connector together, then cut back the wrapping on the harness going to the top-half of the connector. Find the Gray/Light Blue wire and either strip some insulation from it and wrap as solder a lead, or use a 3M tap (fill it with dielectric grease before clamping it on).
I have diagnostic taps into this line and also the driver's side front sensor circuit--a Red/Black wire at pin 11 of C139 (the unlabeled connector just to the top and slightly right of C133 in the diagram below, between C133 and C130).
The easiest sensor to tap is the passenger's side, it is a Gray/Light Blue wire at pin 5 of C133.
You'll need a 10mm socket to remove the M6 clamp screw that holds the connector together, then cut back the wrapping on the harness going to the top-half of the connector. Find the Gray/Light Blue wire and either strip some insulation from it and wrap as solder a lead, or use a 3M tap (fill it with dielectric grease before clamping it on).
I have diagnostic taps into this line and also the driver's side front sensor circuit--a Red/Black wire at pin 11 of C139 (the unlabeled connector just to the top and slightly right of C133 in the diagram below, between C133 and C130).
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