NEBULA™ STROBE POWER SUPPLY
(ETN660)
WARNING
High Voltage! Please wait 5 minutes after shutting
this unit OFF before attempting service. Warranty
void if seal is broken.
Included with the power supply:
1. One Power Wire Harness consisting of one AMP 3 pin
connector with three wires: red (+), black (-) and violet.
NEBULA
MODEL #ETN660
6 HEAD
60 WATT
MULTI-FLASH
Featuring
WARNING: High Voltage! Please wait 5 minutes after shutting this unit off
before attempting service. Warranty void if seal is broken.
2. One Flash Control Wire Harness consisting of one AMP
3 pin connector with three wires: yellow, green and blue.
WARNING
ATO
This power supply is NOT waterproof.
This Strobe Power Supply must be mounted in an area protected from the weather and water.
STROBE POWER SUPPLY
SPECIFICATIONS
Voltage
Current
Power
Fuse
Number of Heads
10-30 Vdc
5.3 Amps @ 12.8 Vdc
60 Watts
15 Amp
6
INSTALLATION
1. First, install the Strobe Power Supply in a protected location using the power supply itself as a template. THE POWER
SUPPLY MUST BE MOUNTED TO A METAL SURFACE.
Make sure all connectors are easily accessible. The unit is
mounted using the 4 mounting holes on a 6” x 2.5” rectangle
(matches exactly the Whelen UPS Series).
FUSE
FRONT MOUNTING PLATE
POWER INPUT SOCKET
(ALSO ON BACK)
FLASH CONTROL INPUT SOCKET
LIGHT HEAD OUTPUT SOCKETS
Figure A.
MALE AMP CONNECTOR
(to be mated with the AMP output
socket on the Power Supply)
Insert wires with male pins into
the proper locations in the male
AMP connector:
RED WIRE - HOLE #1
BLACK WIRE - HOLE #2
WHITE WIRE - HOLE #3
2. Install the strobe light heads in the preferred locations.
3. String the 3 conductor cables between the lights and the
power supply. Make sure the cable is secure along the chosen routing inside the vehicle to prevent it from damage by
chafing or binding. Be sure to keep the cable away from engine hot spots.
NOTE
When routing the cable, make sure the end with the
closed tip terminals (male pins) is toward the power
supply and the end with the open tip terminals (female
pins) is toward the light head.
FEMALE AMP CONNECTOR
Insert wires with female pins into
the proper locations in the female
AMP connector:
RED WIRE - HOLE #1
BLACK WIRE - HOLE #2
WHITE WIRE - HOLE #3
AMP WIRE HARNESS
(attached to Strobe Light Head)
Figure B.
4. Insert the pins on each end of the conductor cables into
the AMP connectors. Each end of these cables has a factory
crimped pin on each of the three wires, see Figure B.
NOTE
If the special flash options (Double, Quint,
WarpFlash™) are to be used, see “Special Mode”
section.
NOTE
It is important to follow the correct color code when
inserting the pins into the AMP connectors.
5. Connect the cables to the strobe light heads.
6. Next, plug the other end of the cable into the Light Head
Output Socket on the Strobe Power Supply, see Figure A.
The location of the connector for each light head attached to
the unit will be determined by the flash pattern selected, see
Figure E.
7. Plug the Flash Control Wire Harness Assembly into the
Flash Control Input Socket on the Strobe Power Supply. Connect the wires from the Flash Control Wire Harness Assembly to the switch control panel, see “Flash Control Wire Harness Assembly” section.
The Power Wire Harness is connected to the Power Input
Socket located on the Strobe Power Supply, see Figure A. If
necessary, use 18 gauge wire to extend the violet wire to a
customer supplied switching system, see Figure G. Connect
the red wire to the positive (+) side of the battery making sure
to place a customer supplied 15 Amp fuse at the battery.
Connect the black wire to the negative (-) side of the battery or
to vehicle chassis.
NOTE
To extend the power (+) and ground (-) wires, use the
following as a guide.
1 to 10 ft. use 18AWG wire
10 to 20 ft. use 16AWG wire
20 to 30 ft. use 14AWG wire
30 to 50 ft. use 12AWG wire
8. Plug the Power Wire Harness Assembly into the Power
Input Socket. Connect the Strobe Power Supply to the power
source to complete the installation, see “Power Wire Harness
Assembly” section.
RIDGE
(indicates location of hole #1)
FLASH CONTROL WIRE HARNESS ASSEMBLY
The Flash Control Wire Harness Assembly consists of an
AMP 3 pin connector with three wires: yellow, green and
blue, see Figure C. The blue wire controls the light head
outlets 1-4 and the green wire controls the light head outlets 5
and 6. The yellow wire is used for pattern selection.
NOTE
RED WIRE - HOLE #1
BLACK WIRE - HOLE #2
VIOLET WIRE - HOLE #3
AMP 3 PIN
CONNECTOR HOUSING
Figure D.
SIMULTANEOUS FLASH A
POWER
CONTROL
3
2
1
If the special flash options (Double, Quint,
WarpFlash™) are to be used, see “Special Mode”
section.
The Flash Control Harness Assembly must be connected to
the Flash Control Input Socket located on the Strobe Power
Supply, see Figure A. Use 18 gauge wire to extend the proper
Flash Control Harness wires to a customer supplied switching system.
1
2
3
4
5
6
BLUE
SIMULTANEOUS
FLASH B
GREEN
YELLOW
RIDGE
(indicates location of hole #1)
AMP 3 PIN
CONNECTOR HOUSING
YELLOW WIRE - HOLE #1
GREEN WIRE - HOLE #2
BLUE WIRE - HOLE #3
Figure C.
POWER WIRE HARNESS ASSEMBLY
The Power Wire Harness assembly consists of an AMP 3 pin
connector with red and black wires to supply power and ground,
and a violet wire to select different patterns, see Figure D.
VIOLET
BLACK (-)
RED (+)
Figure E.
SWITCH CONTROL OPTIONS
Figures F and G show some of the standard switch control
options that can be easily wired to complete a strobe light
system.
Figure F shows an ON/OFF control system that quad flashes
all heads.
Figure G shows how any flash option could be installed depending on which control wire(s) are attached to the switch.
POWER
CONTROL POWER
2
2
1
1
CONTROL
BLACK (-)
GREEN
BLACK (-)
3
3
YELLOW
VIOLET
(Remove)
BLUE
YELLOW
GREEN
VIOLET
BLUE
RED (+)
RED (+)
15 AMP
FUSE
15 AMP
FUSE
(+) 10-30 VDC
(+) 10-30 VDC
SPST ON/OFF SWITCH
(REAR VIEW)
SPST ON/OFF SWITCH
(REAR VIEW)
Figure F.
Standard Quad Flash All Heads ON/OFF Switching
DIRECT CONNECTION
OPTIONAL CONNECTION
! WARNING
Figure G.
Special Pattern Options ON/OFF Switching
PERSONAL INJURY HAZARD
Mounting this device in an improper location may
impair the designed safety characteristics of
the vehicle in the event of a collision.
Consult the vehicle manufacturer before
installing this or any other aftermarket device to
determine its proper mounting location.
Failure to consult and follow the vehicle
manufacturer’s mounting recommendations
may result in serious personal injury or death.
WARRANTY
SoundOff Signal warranties the ETN660 Nebulatm Strobe Power Supply for 2 (two) full
years from date of purchase, to the original purchaser, against any manufactured
defects or workmanship. This warranty applies only to units installed according to
manufacturer's installation instructions and operated within the units specifications.
To Reduce EMI emissions, ONE end of the shield (drain wire)
of the extension cable connecting the output of the power
supply to the Lighthead should be connected to ground. Make
sure ONLY ONE END of the shield is tied to ground. The
other end needs to be taped or cut.
Warranty is void if the unit was installed incorrectly or maliciously damaged.
All warranty claims must be accompanied by a dated proof of purchase.
SoundOff Signal retains the right to be the sole mediator of what constitutes defects
in performance or manufacturing.
SPECIAL MODE
To select any one of the different flash modes, simply connect the Yellow, Violet, Blue and Green wires to a switch in the
following combinations. (“POWER” = 10-30 Vdc and “NC/GND” = no connection or ground)
STEP 1:
Select Pattern
STEP 2:
Select Heads to Flash
VIOLET
NC/GND
NC/GND
POWER
POWER
YELLOW
NC/GND
POWER
NC/GND
POWER
GREEN
NC/GND
NC/GND
POWER
POWER
BLUE
NC/GND
POWER
NC/GND
POWER
PATTERN
Double Flash
Quad Flash
Quint Flash
WarpFlash™
FLASH RATE
(235 FPM)
(140 FPM)
(140 FPM)
(700 FPM)
PATTERN
All Heads OFF
1 and 2 Alt. 3 and 4
5 Alt. 6
1 and 2 and 5 Alt. 3 and 4 and 6
NOTE
Applying voltage to only the violet and/or the yellow wire(s) will not turn ON the power supply. Only the green and blue wire(s)
will turn the power supply ON.
ETN660 3/05
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