GlowShift 7 Color Series 100 PSI Fuel Pressure Gauge - Manual

7 Color Series 100 PSI Fuel Pressure Gauge
For Product Numbers: GS-C711, GS-T711, and GS-W711
Wire Color Code
Yellow: 12v Constant Source (+) (un-switched) Orange: 12v Switched Headlamp Source (+) (optional)
Red: 12v Ignition Source (+) (switched) Green: Connects to the “G” Post one the Pressure Sensor
Black: Vehicle Ground ( - )
1. Disconnect the vehicle's negative battery cable.
Pressure Sensor Installation
2. Install and connect the 1/8
th
NPT fuel pressure sensor to your
vehicle’s fuel system. We recommend installing the sensor to your
fuel filter housing, fuel rail, or lift pump.

Note: This gauge and sensor are not recommended for
use on vehicles with returnless fuel systems.

Note: Some vehicles may require additional adapters to
complete the installation of this sensor.
Connecting the Power Wire Harness
3. To make the wiring of your gauges easier you can purchase an
expandable circuit. This component easily fits into your fuse panel
and provides an additional fused power wire for accessories such as
gauges. The expandable circuit is available for purchase at
www.GlowShift.com.
4. Using automotive grade wiring (18 gauge); connect the green
wire to the “G” post of the pressure sending unit.

Note: For an easier installation GlowShift offers an
extended wire harness that offers 9 feet of sensor wire and
3 feet of power wire so there is no need to extend the
wires yourself.
5. Connect a length of wire (18 gauge) from the “WK” post of the
pressure sensor to any good (unpainted) ground connection.
Note: If this wire is not properly grounded the gauge reading will
be at full pressure.
6. Using automotive grade wiring (18 gauge); connect the yellow
wire to a positive 12 volt constant (un-switched) source either on
the vehicle or in the fuse box.

Note: If you are connecting the yellow wire directly to the
battery, you MUST install a 3 amp fuse within 6-8 inches of
the battery connection.
7. Using automotive grade wiring (18 gauge); connect the red wire
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.
8. Using automotive grade wiring (18 gauge); 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.
9. 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.
10. Reconnect the vehicle's negative battery cable.

If your gauge(s) do not illuminate or do not recall your last
saved color, your switched and un-switched sources are
reversed.

If your gauge(s) only illuminate red then the yellow wire for
constant source is not connected properly.
Be sure all of your wiring is correct to ensure proper gauge
operation.