Page 2 - air-fuel-ratio-gauge
P. 2

Section 2
                          Installation of the DynoTune A/F meter

                   The DynoTune meter is very simple to install, it’s as easy as 1,2,3..
                   1)  Find the location to mount the meter. It is always nicer to have the meter
                       located where it can be seen easily like near the instrument panel. Always
                       try and keep the meter out of direct sunlight. Using the Industrial Velcro,
                       Stick the meter into position.
                   2)  Route the wires to the fuse box area so you will have access to +12 volts
                       and a good ground. Attach the “Brown” wire to +12volts.
                       Attach the “Blue” wire to a good ground. A direct battery (-) ground is
                       always the best ground.
                   3)  You need to determine what type of oxygen sensor you have in your
                       exhaust pipe, 1 wire, 2 wire, 3-wire or 4 wire. Once you find the sensor
                       and determine how may wires you have, follow the directions for that
                       type of sensor. You will need to cut the sensors signal wire on your
                       sensor, splice the three wires together using the splice provided.
                       Optionally you can just strip back a little of the wire and solder/splice
                       the DynoTune'’ wire to the sensors wire. In either case make sure and
                       seal the joint with electrical tape!! Note: You can connect the Meter to

                       the signal wire near your vehicle’s computer if you have the correct
                       wiring diagrams.
                       1-wire oxygen sensors  these sensors are the basic original style sensor
                       with one wire for the signal and the ground connection is made through
                       the exhaust. Connect using the provided splice, the DynoTune meter’s
                       “black” wire to the wire coming out of the Sensor.
                       2 wire oxygen sensors  these sensors are the basic original style sensor
                       with one wire for the signal and one for the ground connection. Connect
                       using the provided splice, the DynoTune meter’s “Black” wire to the
                       Sensor’s signal wire (usually comes out of the center of the sensors
                       body).
                       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.
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