GlowShift 7 Color Series 30,000 PSI Fuel Rail Pressure Gauge - Manual

7 Color Series 30,000 PSI Fuel Rail Pressure Gauge
For Product Numbers: GS-C719, GS-T719, and GS-W719
Wire Color Code
Yellow: 12v Constant Source (+) (un-switched) Orange: 12v Switched Headlamp Source (+) (optional)
Red: 12v Ignition Source (+) (switched) Green: Connects to the Factory Rail Pressure Sensor Wire
Black: Vehicle Ground ( - )
1. Disconnect the vehicle's negative battery cable.
Connecting the Power Wire Harness
2. Connect the green wire to your factory rail PSI sensor signal wire.
This sensor is usually located on the common rail towards the firewall,
but please consult your repair manual for the exact location of this
sensor. Consult the chart below for the color of your vehicle’s factory
sensor wire.

Note: Make sure this wire is not pinched when running it through the
firewall; the use of a rubber grommet is required.
Vehicle Sensor Wire Color
03 Dodge 5.9 Cummins Engine Pink/Black
04-08 Dodge 5.9 and 6.7 Cummins Engine Brown/Yellow
02-08 GM 6.6 Duramax Engine Yellow
06 GM 6.6 Duramax Engine Orange/Back
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 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.
5. 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.
6. 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.
7. 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.
8. 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.