help!!!! install air/fuel gauge

[migente415]

iam just having a problem with installing air/fuel gauge on my xb .i dont know which wire to tap into on the o2 sensor. any info will thank you....

[aalbertson3]

Moved from the DIY Section so you can get some help. :smile:

[Butters]

do you have a multi meter? if so find out what wire changes signal that is power. that will be the one you will want.



3 wire oxygen sensors these sensors are the newer ones with built in

heaters. They have a signal wire and two heater wires (Heater wires
are usually the same color, gray). Connect using the provided splice,
the DynoTune meter’s “Black” wire to the Sensor’s signal wire
(usually black or purple).

4 wire oxygen sensors these sensors are the newer ones with built in
heaters. They have a signal wire, two heater wires (usually the same
color, gray) and a ground wire. Connect using the provided splice, the
DynoTune meter’s “Black” wire to the Sensor’s signal wire (usually
black or purple).

Note: If you do not have any of the color wires listed you need to do
some detective work. The heater wires are typically always the same
color so rule those out. The ground wire is attached to the body of the
sensor, use a multi-meter to check for continuity. The only wire that is
left is the signal wire!! The white wire on the meter is not used.