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EG21-96048N page 2 of 2
Pressure, Temperature, Fuel Level and Voltmeter Gage
Ammeter Gage
Light Switch
Battery
ON/OFF
Switch
Red
Black
Yellow
*
Battery
Alternator
Black
Yellow
*
WARNING:
DISCONNECT
BATTERY
NEGATIVE
CABLE BEFORE
WIRING OR
SERVICE.
*
Yellow wire is optional for gage illumination and
does not need to be connected for gage to operate.
Sender Wiring
Grounded Sender
Ungrounded Sender Dual Gages with Dual Gage Sender
Blue
Black
Blue
Black
Sending Unit
Blue
Sending Unit
Blue
Black
Sending Unit
WARNING: DISCONNECT BATTERY NEGATIVE CABLE BEFORE WIRING OR SERVICE.
CAUTION: Connecting full Battery potential to the brown wire can damage the SWICHGAGE
®
. Shutdown circuit is rated for
300 mA continuous, 900 mA inrush. Circuit grounds out at set point.
Battery
ON/OFF
Switch
Red
Red
Black
Brown
Orange
Fuel Valve
Diode Package
Black
518APH
Magnetic Switch
G
NO
NC SW1 SW2 B
Orange
Battery
ON/OFF
Switch
Red
Brown
Alarm Device or
Shutdown Relay
OBSERVE ELECTRICAL RATING
Black
SWICHGAGE
®
Wiring
Basic Wiring
CAUTION: Devices containing solid
state components can be damaged or
caused to malfunction when used in systems
which incorporate inductive loads (e.g. relays,
solenoids, etc.) that can generate voltage spikes.
To reduce the potential for this type of damage,
install a flyback or clamping diode across all
inductive loads (see wiring diagram shown right).
Use Murphy diode package 65-00-0343 or
equivalent. A typical diode is 1N4005 which is
readily available from commercial sources. Failures
of this type are not covered by our Limited Warranty.
Warranty
A limited warranty on materials and workmanship is given with this FW Murphy product.
A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm
INDUSTRIAL PANEL DIVISION
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100 fax +1 918 317 4266
e-mail sales@fwmurphy.com
MURPHY DE MEXICO, S.A. DE C.V.
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
+52 444 8206264 fax +52 444 8206336
Villahermosa Office +52 993 3162117
e-mail ventas@murphymex.com.mx
www.murphymex.com.mx
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax +44 1722 410088
e-mail sales@fwmurphy.co.uk
www.fwmurphy.co.uk
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100 fax +1 918 317 4266
e-mail sales@fwmurphy.com
www.fwmurphy.com
Printed in U.S.A.
*Model 518APH is the only Murphy
recommended Tattletale
®
for use
with the EGS21 series Electric
SWICHGAGE
®
.
*