Ecco ED3974 Series Owner's manual

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Do not install and/or operate this safety product unless you have read and understand the
safety information contained in this manual.
1. Proper installation combined with operator training in the use, care, and maintenance of emergency warning devices are
essential to ensure the safety of you and those you are seeking to protect.
2. Exercise caution when working with live electrical connections.
3. This product must be properly grounded. Inadequate grounding and/or shorting of electrical connections can cause high
current arcing, which can cause personal injury and/or severe vehicle damage, including fire.
4. Proper placement and installation are vital to the performance of this warning device. Install this product so that output
performance of the system is maximized and the controls are placed within convenient reach of the operator so that s/he
can operate the system without losing eye contact with the roadway.
5. It is the responsibility of the vehicle operator to ensure during use that all features of this product work correctly. In use, the
vehicle operator should ensure the projection of the warning signal is not blocked by vehicle components (i.e., open trunks
or compartment doors), people, vehicles, or other obstructions.
6. The use of this or any other warning device does not ensure all drivers can or will observe or react to a warning signal.
Never take the right-of-way for granted. It is your responsibility to be sure you can proceed safely before entering an
intersection, driving against traffic, responding at a high rate of speed, or walking on or around traffic lanes.
7. This equipment is intended for use by authorized personnel only. The user is responsible for understanding and obeying
all laws regarding warning signal devices. Therefore, the user should check all applicable city, state, and federal laws and
regulations. The manufacturer assumes no liability for any loss resulting from the use of this warning device.
WARNING!
Failure to install or use this product according to manufacturer’s recommendations may result in property
damage, serious bodily/personal injury, and/or death to you and those you are seeking to protect!
!
Specications:
Size: 2.1 H x 7.8 W x 1.6 D
Weight: 0.6 lbs.
Input Voltage: 12-24 VDC
Current at 12 VDC: 0.8 Amps
Power at 12 VDC: 9.6 Watts
Temperature Range: -40°C to 65°C
IMPORTANT! Read all instructions before installing and using. Installer: This manual must be
delivered to the end user.
Installation and Operation Instructions
ED3974 SERIES WINDOW SHROUD LIGHT

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Installation & Mounting:
Carefully remove the unit from its packaging. Examine the
unit for transit damage. If damage is found, return the product
to your local dealer for warranty replacement. Do not use
damaged or broken parts. Determine a mounting location that
ensures a clear line of sight for oncoming traffic.
!
Caution: When installing using VHB tape
into any vehicle with aftermarket tinted glass, it is best
practice to trim the film around the surface where the
bracket will be mounted to ensure adhesion and avoid
damage to the tint film.
Without removing the double sided tape liner, hold the
product to the desired location.
Adjust the light head angle by loosening the nut on the back
of the product using a wrench. When the desired angle is
achieved, tighten the nut.
1. Clean mounting surface with supplied alcohol wipe.
* for extra adhesion, see notes below.
2. Peel-off double sided tape liner.
3. Apply product on to the treated surface. Apply light
pressure for 20 seconds.
Wiring Instructions:
IMPORTANT! This unit is a safety device and it must
be connected to its own separate, fused power point
to assure its continued operation should any other
electrical accessory fail.
All wiring should be stranded and a minimum of 22 AWG. The
positive line must have an in-line 2 AMP slow-blow fuse for
each unit as shown in FIGURE 1. Isolate the yellow and blue
wires when not in use.
YELLOW -
SYNC
+ -
BLACK - GROUND
BLUE -
FLASH PATTERN SELECT
(MOMENTARY TO GROUND),
DIM - POSITIVE
RED - POSITIVE
SWITCH
(USER SUPPLIED)
IN-LINE FUSE
(USER SUPPLIED)
WHITE -
POSITIVE
SWITCH
(USER SUPPLIED)
Flash pattern select:
To select a flash pattern, apply power to the RED or WHITE or both RED and WHITE wires.
Apply blue to black wire for flash pattern change:
Dimming Function:
Connect blue wire to Red power wire.
Synchronization:
The ED3974 series is capable of syncing up to 8 (same product & other compatible ECCO products) by following the steps
below:
1.Set the desired flash pattern on each unit individually. It is also strongly recommended that the same style of flash pattern be used
on all units to produce the most effective warning pattern. NOTE: Phases A and B for each style of flash pattern in the table denote the
relative timing between units connected in a synchronizing installation. To operate simultaneously, each unit must be set to the same
phase (A +A or B + B); to operate alternately, units must be set to have the opposite phase (A + B or B + A).
2.Connect the yellow sync wires together and check that the units are flashing in a synchronized manner as expected. If a pattern on
one unit appears incorrect, the blue pattern select wire can be used to cycle forward or backward on that individual unit until the correct
pattern is selected. NOTE: This will only change the pattern in the one unit and will not affect the other units connected to the yellow
sync wire.
FIGURE 1
Push Times Function
0-1 sec next pattern
1-3 secs. previous pattern
3-5 secs. factory default pattern
5+ secs. last pattern
*For extra adhesion, use 3M Tape Primer. For product & application information, go to: https://multimedia.3m.com/
mws/media/65952O/3mtm-tape-primer-94.pdf

Paern Mode Descripon Phase FPM RW BW AW RWBW RW BW AW RWBW RW BW AW RWBW
1Single Flash - Simultaneous Color 1 A 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
2Single Flash - Simultaneous Color 1 B 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
3Single Flash - Alternang Color 1 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
4Single Flash - Alternang Color 1 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
5Double Flash - Simultaneous Color 1 A 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
6Double Flash - Simultaneous Color 1 B 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
7Double Flash - Alternang Color 1 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
8Double Flash - Alternang Color 1 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
9Quad Flash - Simultaneous Color 1 A 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
10 Quad Flash - Simultaneous Color 1 B 75 Class 1 Class 1 Class 1 N/C Class B Class B Class B N/C N/C N/C N/C N/C
11 Quad Flash - Alternang Color 1 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
12 Quad Flash - Alternang Color 1 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
13 Single Flash - Simultaneous Color 1 A 120 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
14 Single Flash - Simultaneous Color 1 B 120Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
15 Single Flash - Alternang Color 1 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
16 Single Flash - Alternang Color 1 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
17 Double Flash - Simultaneous Color 1 A 120 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
18 Double Flash - Simultaneous Color 1 B 120 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
19 Double Flash - Alternang Color 1 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
20 Double Flash - Alternang Color 1 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
21 Quad Flash - Simultaneous Color 1 A 120 Class 1 Class 2 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
22 Quad Flash - Simultaneous Color 1 B 120 Class 1 Class 2 Class 1 N/C N/C N/C N/C N/C Class 1 Class 1 Class 1 N/C
23 Quad Flash - Alternang Color 1 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
24 Quad Flash - Alternang Color 1 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
25 Single Flash - Simultaneous Color 1 A 350 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
26 Single Flash - Simultaneous Color 1 B 350 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
27 Single Flash - Alternang Color 1 A 350 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
28 Single Flash - Alternang Color 1 B 350 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
29 Single Flash - Simultaneous Color 2 A 75 Class 1 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C N/C N/C N/C
30 Single Flash - Simultaneous Color 2 B 75 Class 1 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C N/C N/C N/C
31 Single Flash - Alternang Color 2 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
32 Single Flash - Alternang Color 2 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
33 Double Flash - Simultaneous Color 2 A 120 Class 1 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C N/C N/C N/C
34 Double Flash - Simultaneous Color 2 B 120 Class 1 Class 1 Class 1 Class 1 N/C N/C N/C N/C N/C N/C N/C N/C
35 Double Flash - Alternang Color 2 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
36 Double Flash - Alternang Color 2 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
37 Single Flash - Simultaneous Color 1 & Color 2 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
38 Single Flash - Simultaneous Color 1 & Color 2 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
39 Single Flash - Alternang Color 1 & Color 2 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
40 Single Flash - Alternang Color 1 & Color 2 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
41 Double Flash - Simultaneous Color 1 & Color 2 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
42 Double Flash - Simultaneous Color 1 & Color 2 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
43 Double Flash - Alternang Color 1 & Color 2 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
44 Double Flash - Alternang Color 1 & Color 2 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
45 Single Flash - Simultaneous Color 2 & Color 1 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
46 Single Flash - Simultaneous Color 2 & Color 1 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
47 Single Flash - Alternang Color 2 & Color 1 A 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
48 Single Flash - Alternang Color 2 & Color 1 B 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
49 Double Flash - Simultaneous Color 2 & Color 1 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
50 Double Flash - Simultaneous Color 2 & Color 1 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
51 Double Flash - Alternang Color 2 & Color 1 A 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
52 Double Flash - Alternang Color 2 & Color 1 B 120 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
53 Steady Burn - Color 1 & Single Flash - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
54 Single Flash - Color 1 & Steady Burn - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
55 Steady Burn - Color 1 & Single Flash - Color 2 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
56 Single Flash - Color 1 & Steady Burn - Color 2 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
57 Steady Burn - Color 2 & Single Flash - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
58 Single Flash - Color 2 & Steady Burn - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
59 Steady Burn - Color 1 & Quad Flash - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
60 Quad Flash - Color 1 & Steady Burn - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
61 Steady Burn - Color 1 & Quad Flash - Color 2 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
62 Quad Flash - Color 1 & Steady Burn - Color 2 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
63 Steady Burn - Color 2 & Quad Flash - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
64 Quad Flash - Color 2 & Steady Burn - Color 1 75 N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
65 Steady Burn - Color 1 N/A N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
66 Steady Burn - Color 2 N/A N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
17 67
ON/A N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C N/C
16
7
8
9
10
11
Flash Paern Chart
Tabla de patrones de destello
12
13
14
15
2
3
4
5
6
SAE J595
CA Title 13
ECE R65
1
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