GlowShift 7 Color Series Celsius Pyrometer EGT Gauge - Manual

7 Color Series Celsius Pyrometer EGT Gauge
For Product Numbers: GS-C708-C, GS-T708-C, GS-W708-C
Wire Color Code
Yellow: 12v Constant Source (+) (un-switched) Orange: 12v Switched Headlamp Source (+) (optional)
Red: 12v Ignition Source (+) (switched) Blue: Connects to the Blue Wire on the EGT Probe
Black: Vehicle Ground ( - ) Pink: Connects to the Pink Wire on the EGT Probe
1. Disconnect the vehicle's negative battery cable.
Installing the EGT Probe
2. There are two common types of EGT probe installations. We recommend
installing the probe pre-turbo for the most accurate reading.

Exhaust Manifold: Drill and tap the exhaust manifold to 1/8 th -27 NPT.
Install the supplied EGT probe directly into your exhaust manifold.
Note: After drilling and tapping your exhaust manifold be sure
to use both a magnet and vacuum to safely remove all shavings
from the manifold.

Exhaust Temperature Bracket: This method is not shown, but you
may purchase an exhaust temperature bracket from
www.GlowShift.com. This adapter is clamped and tightened around the
exhaust pipe and provides a 1/8
th NPT fitting for an EGT probe. Using a
7/32 nd drill bit, drill a hole in your exhaust pipe. Position and tighten the
adapter clamp, then permanently mount the probe through the fitting and
into the exhaust pipe.
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. Connect the pink & blue wires from the gauge wire harness to the pink &
blue wires of the exhaust temperature probe.
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
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.