Installation and wiring, Operation, Page 2 – Whelen M7A24 User Manual
Page 2
Page 2
6.375"
3.1875"
0.25"
0.625"
0.25"
To +VBAT
To Ground
LED Color
3A Fuse
SP/ST
BLK/WHT
MOUNTING DIMENSIONS
WIRING DIAGRAM
M
O
U
N
T
I
N
G
S
U
R
F
A
C
E
Gasket-
Use formed gasket on
flat, smooth surfaces
only.
#8 x 1"
PPHSMS
M7 Assembly
Slotted Hole
Screw Grommet
To +VBAT
To +VBAT
To +VBAT
To Ground
WHT/VIO
LED Color
VIOLET
BLACK
GREY
SYNC
1A Fuse
1A Fuse
3A Fuse
SP/ST
SP/ST
MOM. SW
M7
Lighthead
(5-Wire)
M7
Lighthead
(2-Wire)
Pattern
SYNC?
CA Title XIII?
Phase
1
SignalAlert™CAL
PH.1
YES
YES
SignalAlert™CAL
PH.2
YES
YES
3
CometFlash®75
PH.1
YES
NO
4
CometFlash®75
PH.2
YES
NO
5
DoubleFlash 75
PH.1
YES
YES
6
DoubleFlash 75
PH.2
YES
YES
7
SingleFlash 75
PH.1
YES
YES
8
SingleFlash 75
PH.2
YES
YES
9
ComAlert™ 75
PH.1
YES
NO
10
ComAlert™ 75
PH.2
YES
NO
11
LongBurst™ 75
PH.1
YES
NO
12
LongBurst™75
PH.2
YES
NO
13
SingleFlash 60
PH.1
NO
YES
14
SingleFlash 90
PH.1
NO
YES
15
SingleFlash 120
PH.1
NO
YES
16
SingleFlash 300
PH.1
NO
NO
17
DoubleFlash 150
PH.1
NO
NO
18
ComAlert™ 150
PH.1
NO
NO
19
ActionFlash™50
PH.1
NO
NO
20
ActionFlash™150
PH.1
NO
NO
21
ModuFlash™
PH.1
NO
NO
22
DoubleFlash 120
PH.1
NO
YES
23
TripleFlash™75
PH.1
NO
YES
24
TripleFlash™120
PH.1
NO
YES
25
Action SF 60/120
PH.1
NO
YES
26
Action SF 60/TF 120
PH.1
NO
YES
27
CalScan™
PH.1
NO
YES
28
ActionScan™
PH.1
NO
NO
29 SignalAlert™ Steady
PH.1
NO
NO
30 Steady
PH.1
NO
YES
*
*
*
Low power not available for this pattern
2
CAUTION! DO NOT LOOK DIRECTLY AT THESE LEDS WHILE THEY ARE ON.
MOMENTARY BLINDNESS AND/OR EYE DAMAGE COULD RESULT!
IMPORTANT WARNING!
Installation and Wiring:
External Flasher Models: This product draws significantly less
current than a standard incandescent automotive bulb. If your
flasher does not operate properly, it may be necessary to replace
your flasher module with a Whelen® flasher module. Contact your
sales representative for application.
Caution: Permanent mounting of this product will require
drilling. It is absolutely necessary to make sure that no other
vehicle components could be damaged by this process.
Check both sides of the mounting surface before starting. If
damage is likely, select a different location.
WARNING! All customer supplied wires that connect to the
positive terminal of the battery must be sized to supply at
least 125% of the maximum operating current and FUSED at
the battery to carry that load. DO NOT USE CIRCUIT
BREAKERS WITH THIS PRODUCT!
NOTE: The color of the Positive Wire is determined by the
color of the LED. In this manual, RED is used as a reference.
1.
Using the dimensions shown, mark the 2 mounting hole
locations and wire access hole location onto the mounting
surface.
2.
Drill the two, 0.250” diameter mounting holes and a 0.625”
(minimum) wire access hole into the mounting surface.
3.
Place the gasket into position on the rear of the M7
assembly. Insert the slotted hole screw grommet through the
mounting holes on the M7/Gasket assembly.
4.
Feed the M7 wires through the wire access hole in the
mounting surface. Press the M7/Gasket/Grommet assembly
onto its mounting location so that it is flat against the
mounting surface. With the assembly in position and using
the hardware provided, tighten the mounting screws until the
lighthead assembly is drawn firmly against the mounting
surface. DO NOT OVERTIGHTEN!
5.
Using appropriately sized wires (minimum 18 AWG), extend
the M7 wires to their designated connections. Refer to the
diagram below for wiring and fusing information.
Operation:
Flash Mode / RED:
Apply +VBAT to the RED wire to activate the lighthead in “flash
mode”. With flash mode activated, you may change the flash
pattern using Scan-Lock™.
Low Power / VIOLET:
The type of switch used depends on how the operator wishes
the Low Power feature to function:
Latching Mode: By applying +VBAT to the VIO wire for less than
1 sec., the lighthead is “latched” into low power. The light must be
turned off and then back on to restore normal operation.
(A momentary switch is preferred)
Level Mode: Applying +VBAT to the VIO wire for more than 1 sec.
holds the lighthead in low power mode until voltage is removed.
(A toggle switch is preferred)
SYNC / GREY
To SYNC 2 lightheads, configure both lightheads to display the
same Phase 1 (Simultaneous) pattern. Turn power off and connect
the GREY wire from each lighthead together. When the lightheads
are activated their patterns will be synchronized. To configure two
lightheads to alternate their patterns, advance the pattern of either
lighthead to Phase 2 (Alternating) of the current pattern.
Scan-Lock™ / WHT/VIO / Flash Pattern Selection:
This feature allows the user to select from several available
flash patterns.
The lighthead must be switched on for Scan-Lock™ to work.
TO CYCLE THROUGH ALL PATTERNS: Apply +VBAT to the WHT/VIO wire for
less than 1 second and release. To cycle backward through patterns apply +VBAT
to the WHT/VIO wire for over 1 second and release.
TO SET A PATTERN AS DEFAULT: Allow the pattern to run for more than 5
seconds. The lighthead will flicker slightly when the pattern locks in. This flicker
may be difficult to see with some patterns. The lighthead will now display this
pattern when activated.
TO RESET TO THE FACTORY DEFAULT PATTERN: Turn off power. While
applying +VBAT to the WHT/VIO wire, turn power on. This will reset the lighthead
to it’s factory default flash pattern.
IMPORTANT! It is the responsibility of the installation technician to make
sure that the installation and operation of this product will not interfere with
or compromise the operation or efficiency of any vehicle equipment!