GlowShift 3in1 Boost_Vacuum Combination Gauge - Manual

3in1 Boost/Vacuum Combination Gauge
For Product Numbers: GS-3G-21, GS-3G-21_BAR, GS-3G-22
1. Disconnect the negative battery cable.
Boost/Vacuum Sensor Installation
1. Cut any boost line and insert the included T-fitting in between the 2
cut pieces of boost line. Insert accordingly so that the intersecting cross
piece of the fitting is left to be connected to the boost hose. Route and
connect the boost hose to the digital boost sensor, making sure the air
filter is installed in line with the sensor.

Note: If a boost line is not available to cut, you may need to
purchase a brass barbed fitting to install into the intake
manifold to obtain a boost pressure reading. Fittings can be
purchased at www.GlowShift.com.
2. Mount the electronic boost sensor in a dry, safe area away from moving
engine parts or extreme heat. This may either be inside the cabin or
mounted to the firewall.
3. Route the boost sensor wire harness from the back of the gauge (top
right port) through the firewall to the engine bay. Next, couple and
secure the sensor wire harness to the boost pressure sensor.

Note: When running the wire harness to the sensor, be sure to
keep it away from any moving parts or direct heat source by
securing it with zip ties. Also, when passing the wires through
the firewall be sure to use a grommet to prevent them being
cut or damaged.
Temperature Sensor Installation
1. This sensor can be used to monitor your oil temperature, water
temperature, as well as your transmission temperature. Confirm the
thread size where you are installing the sensor is 1/8
th NPT.

Oil Temperature Installation: You can install the sensor to
your oil gallery test port, by using a T-fitting to “T” off your
stock sensor location, or by using GlowShift’s Oil Filter
Sandwich Adapter.

Water Temperature Installation: You can install the sensor
to your coolant fluid port, by using a T-fitting to “T” off your
stock sensor location, or by using GlowShift’s Water
Temperature Sensor Adapter.

Transmission Temperature Installation: You can install the
sensor to your transmission temperature port or by using a T-
fitting to “T” off your stock sensor location.

Note: Use Teflon tape on the temperature sensor threads before
installing it to ensure a tight seal and no pressure leaks.
2. Connect and route the temperature sensor wire harness from the
back of the gauge (bottom right port) through the firewall and to the
temperature sensor mounting location. Once the wire harness has been
run to the sensor location, simply connect the white wire on the harness to
the white wire on the sensor then connect the black wire on the harness to
the black wire on the sensor.

Note: When running the wire harness to the sensor, be sure to
keep it away from any moving parts or direct heat source by
securing it with zip ties. Also, when passing the wires through
the firewall be sure to use a grommet to prevent them being
cut or damaged.
Pressure Sensor Installation
1. This sensor can be used to monitor your fuel pressure or oil pressure.

Fuel Pressure Installation: Install and connect the 1/8 th NPT
fuel pressure sensor to your vehicle’s fuel system.

Oil Pressure Installation: You can install the sensor to your oil
gallery test port, by using a T-fitting to “T” off your stock sensor
location, or by using GlowShift’s Oil Filter Sandwich Adapter.

Note: Use Teflon tape on the pressure sensor threads before
installing it to ensure a tight seal and no pressure leaks.

Note: Additional adapters may be required to complete the
pressure sensor installation.
2. Connect and route the pressure sensor wire harness from the back of
the gauge (bottom left port) through the firewall and to the pressure sensor
mounting location.

Note: When running the wire harness to the sensor, be sure to
keep it away from any moving parts or direct heat source by
securing it with zip ties. Also, when passing the wires through the
firewall be sure to use a grommet to prevent them being cut or
damaged.
Connecting the Power Wire Harness
1. Connect the gauge’s wire harness to the upper left port on the back of
the gauge.
2. Using automotive grade wiring, connect the red wire to a positive 12
volt constant ignition source. It may be connected to the fuse panel, an
accessory wire, or any positive 12 volt source that is constantly powered.

Note: If you are connecting the red wire directly to the battery,
you MUST install a 4 amp fuse within 6-8 inches of the battery
connection.
3. Using automotive grade wiring (18 gauge); connect the white wire to a
positive 12 volt switched ignition 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 switch of the vehicle.
4. Using automotive grade wiring (18 gauge); connect the black wire from
the gauge to any good (unpainted) ground connection. You may also route a
wire directly to the negative side of the vehicle’s battery.
5. This gauge features 3 daytime and 3 nighttime dimming modes. Connect
the orange wire to the 12 volt positive headlamp source. This allows the
dimming mode to be activated when the headlights come on. Press and hold
the color button until daytime is shown on the digital display. Press the
button again to set your brightness level. For the nighttime mode, turn on
the switch that you connected the orange wire to and repeat the steps above.
NOTE: Do not connect the orange wire to a dimmer wheel. This will
cause the gauge lighting to flicker.
6. 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.
7. Re-connect the negative side of the battery and test the gauge for full
functionality.