Owner manual

7 Color Series Wideband Air/Fuel Ratio Gauge with Data Logging Output
For Product Numbers: GS-C702W, GS-T702W and GS-W702W
Wire Color Code
Red:
12v Constant Source (+) (un-switched)
Black:
Vehicle Ground ( - )
White:
12v Ignition Source (+) (switched)
Orange:
12v Switched Headlamp Source (+) (optional)
4. Next, route and secure the sensor wire harness from the sensor
into the vehicle, close to the controller’s location. Be sure to
use a grommet when routing the wires through the firewall to
protect them from stripping.
5. Connect the red wire to a positive 12 volt constant (un-
switched) source either directly to the battery or to a fuse panel
on the vehicle. If wiring to an un-fused source, install a 3 amp
fuse inline within 20 inches of the sources connection.
6. The white wire should be connected to a positive 12 volt
ignition (switched) source. It may be connected to the fuse panel,
an accessory wire, or any positive 12 volt source that turns on and
off with the ignition
7. Connect the black wire to any good (unpainted) ground
connection. You may also route a wire directly to the negative side
of the vehicle’s battery.
8. The Night Time Dimming feature decreases the brightness of the
gauge face by 30%. Connect the orange wire to the 12 volt
positive headlamp source. This allows the mode to be activated
when the headlights come on. This step is optional and will not
affect operation of the gauge if it is omitted. NOTE: Do not
connect the orange wire to a dimmer wheel. This will cause the
gauge lighting to flicker.
9. Reconnect the negative battery cable.

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