GlowShift 7 Color Series 35 PSI, 60 PSI, 100 PSI Boost Gauge User Manual
GlowShift For the car
7 Color Series 35 PSI, 60 PSI, 100 PSI Boost Gauge
For Product Numbers:
Wire Color Code:
Yellow: 12v Constant (unswitched) Source (+)
Black: Vehicle Ground ( - )
Red: 12v (switched) Source (+)
Orange: 12v Dimmer (switched) Source (+) (optional)
1. Disconnect the negative battery cable.
2. Connect the boost line to the gauge using the female
compression fitting. Once this is connected, run the boost line
through the firewall and to your intake manifold.
Note: Make sure the boost line is not pinched; the use of
a rubber grommet through the firewall is required.
3. Drill and tap your intake manifold to 1/8-27 NPT. Next, connect
the included male compression fitting, which is attached to the
boost line, to the tapped 1/8-27 NPT hole you just drilled in your
Note: After drilling and tapping your intake manifold, be
sure to use vacuum and pen magnet to safely remove all
shavings from the manifold. You may also remove the
top of your intake manifold before drilling for extra
protection against drill shavings.
Note: If you are installing this gauge into a Dodge Ram,
model years 98 to 07.5, you can install a boost bolt
directly to your intake manifold. Installing this boost bolt
does not require any drilling or tapping and can be
purchased at www.GlowShift.com
Connecting the Power Wire Harness
4. 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
5. 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.
6. 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.
7. 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.
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 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
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