GlowShift Boost & Oil Pressure Combo Gauge - Manual

Digital Series Boost & Oil Pressure Combo Gauge
For Product Numbers: GS-BDC02 and GS-RDC02
Wire Harness Color Code
Yellow: 12v Constant (un-switched) Source (+) Green: Connects to G Post on the Oil Pressure Sensor
Red: 12v Ignition (switched) Source (+) White: Connects to White Wire on the Boost Pressure Sensor
Black: Vehicle / Engine Ground (-)
1. Disconnect the negative battery cable.
Installing the Boost Pressure Sensor
2. To install the boost pressure sensor, cut any boost line and insert the included T-
fitting between the cut boost lines. Once the T-fitting is installed, connect the boost
line, with the air filter connected, to the digital boost pressure sensor.

Note: Be sure that the boost pressure sensor is mounted in a dry
location either to the firewall or inside the cabin.
Installing the Oil Pressure Sensor
3. Install the oil pressure sensor. There are three common types of oil pressure
sensor installations:

Oil Gallery Test Port: Some engine oil galleries will have a test port
plug. Check your owner’s manual to verify the location and thread size.
Remove the port plug and install the supplied pressure sensor.
Additional adapters may be required if the port is not threaded to 1/8
th
NPT.

Oil Filter Adapter Installation: You can purchase an Oil Filter
Sandwich Adapter from www.GlowShift.com. This adapter installs
between your oil filter and engine block,
providing you with 3 sensor ports in which you can install
the oil pressure sensor to.

T-Fitting Installation: Remove your stock oil pressure
sensor and fasten a T-fitting in its place. 1/8
th NPT T-Fittings are
available for purchase at www.GlowShift.com. Using a T-fitting allows
you to “T” off of the port and opens up 3 more, which then allows for
the stock and GlowShift sensors to be installed and operate
simultaneously.
Connecting the Power Wire Harness
4. Route the wire harness from the back of the gauge through the firewall to the
boost sensor mounting location. Next, couple and secure the white wire on the wire
harness to the white wire on the boost pressure sensor. Now you can connect the
red wire on the boost pressure sensor to a positive switched 12 volt source and
connect the black wire to any good (unpainted) ground location.

Note: Be sure to use a grommet when routing wires through the firewall
to protect them from being cut or damaged.
5. Using automotive grade wiring (18 gauge); connect the green wire to the “G”
post of the pressure sending unit.
6. Connect a length of wire 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. Reconnect the vehicle's negative battery cable.