Davies Craig 0500 Installation Instructions Manual
19/12/2018 DIGITAL GAUGE THERMATIC
FAN/EWP SWITCH 1 | Page
77 Taras Avenue
P.O. Box 363
Altona North
Vic 3025 Australia
Phone: +61(0)3 9369 1234
Fax: +61(0)3 9369 3456
info@daviescraig.com.au
www.daviescraig.com.au
DIGITAL GAUGE THERMATIC® FAN/EWP® SWITCH
INSTALLATION INSTRUCTIONS
Congratulations on your purchase of the Davies, Craig Digital Gauge Thermatic®
Fan/ EWP® Switch. The Digital Gauge Thermatic® Switch allows you to keep an eye
on your cooling system’s temperature whilst it automatically controls single or twin
Thermatic® fans, or a combination of a Thermatic® fan and Electric Water Pump
(EWP®) or Electric Booster Pump (EBP®) at independent target temperatures for
those times when extra cooling is required.
PLEASE READ ALL THESE INSTRUCTIONS THOROUGHLY BEFORE YOU START WORK.
DON’T RUSH - ENSURE YOU HAVE FULL UNDERSTANDING OF THE WORK AHEAD BEFORE
YOU COMMENCE. ENSURE YOU HAVE ALL TOOLS AND COMPONENTS REQUIRED.
COMPONENTS
1 x Digital Gauge Display
1 x Digital Gauge Stand
1 x Digital Gauge Wiring Loom
1 x Rubber Gauge Retainer
1 x U-Bracket Gauge Mount
1 x Double Sided Tape Disc
1 x Sensor Probe Mounting Kit
2 x 15 Amp Fuses
2 x 30 Amp Fuses
2 x 12v 40 Amp Relays
2 x Fan Wiring Harnesses
2 x 5mm Ring Terminals
2 x Yellow 6mm Ring Terminals
2 x Yellow Connectors
6 x Scotch Locks
3 x Self-Tapping Screws
FUNCTIONS
KEY FEATURES:
Temperature setting range.
5°C → 110°C (41°F → 230°F).
Selectable °C & °F.
12v and 24v compatible.
Universal 52mm Gauge design.
Individual fan set temperature.
Over temperature alarm with snooze
function.
LED temperature readout.
LED status indicators.
Extra-long temperature sensor wire.
Display dimmer (optional).
A/C override (optional).
Works as manual override.
Independent control of fan.
overridden.
SPECIAL FEATURES:
Manually turn off either fan’s ‘control
by temperature’ functionality.
Disables (turns off) each fan.
Interchangeable sensor.
Replicable sensor probe.
Can detect coolant temperature.
Use #0409 for top radiator hose.
Use #0465 for ¼” NPT port.
Transmission fluid detection.
Requires the use of #0465 and a
sensor adaptor.
Adaptor can be made using:
1 x female tee ¼” NPT
2 x barb fitting to ¼” NPT
Barb to fit transmission hose
(above parts sourced externally)
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FAN/EWP SWITCH 2 | Page
DIGITAL GAUGE THERMATIC® FAN/EWP® SWITCH MOUNTING
The Digital Gauge Thermatic® Fan/ EWP® Switch is compatible with many 52mm
Gauge stands and mounts.
The Digital Gauge Thermatic® Fan/ EWP® Switch MUST be mounted inside the
passenger compartment to minimise its ambient temperature and exposure to
water.
For a neat installation the Gauge Display can be mounted to the underside of
the dash to avoid drilling holes in the dash or having exposed wiring.
Locate or drill a minimum 13mm hole in the dash and pass the wiring loom
through leaving the ‘loom connector’ free to plug into the Gauge.
Thermal Sensor wire MUST NOT be cut in ANY circumstances.
Ensure the mounting location allows easy access to the 3 set buttons.
If using an alternative mounting method follow appropriate installation
procedure.
Mount the Gauge Stand in position. This can be done using the two screw holes in
the base of the stand or with the double-sided tape disc.
Pass the ‘loom connector’ through the rectangular hole in the back of the Gauge
Stand and plug into the socket of the Gauge.
Carefully push the Gauge Display into the Gauge Stand ensuring the rubber
retainer ring is installed on the Gauge Display.
Be mindful of the orientation of Gauge Display as it can be hard to rotate once
fully installed into the Gauge Stand.
DIGITAL GAUGE THERMATIC® FAN/EWP® SWITCH WIRING
Ensure all wiring is protected from rubbing on bare metal or other sharp edges.
Locate a hole in the firewall (approx.15 mm in diameter) and pass the required
wiring (below) through the firewall from the passenger cabin to the engine bay.
BLUE “FAN 1” wire.
ORANGE “FAN 2” wire.
Temperature probe wiring.
GREEN “AIR CONDITONER” wire (OPTIONAL).
If using the “AIR CONDITONER” wire as a manual override simply
connect it to a positive source though toggle switch.
Locate a Positive ignition or accessories source within the passenger compartment
and connect the RED “IGNITION” wire.
Connect the BLACK “EARTH” wire to the chassis or negative Earth supply.
If using the Dimmer function locate a positive source that is controlled by the
headlight switch and connect the “DIMMER” wire. YELLOW
If an appropriate source cannot be located you will need to run the YELLOW
“DIMMER” wire through the firewall and connect it to the positive feed of one
of the headlights.
*For positive earth systems, wire ‘Earth’ to battery negative not the chassis
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FAN/EWP SWITCH 3 | Page
DIGITAL GAUGE THERMATIC® FAN/EWP® WIRING DIAGRAM
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