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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.
*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
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.
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:
Push Times
Function
0-1 sec
next pattern
1-3 secs.
previous pattern
3-5 secs.
factory default pattern
5+ secs.
last pattern
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.
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.
SWITCH
(USER SUPPLIED)
SWITCH
(USER SUPPLIED)
IN-LINE FUSE
(USER SUPPLIED)
BLACK - GROUND
+
-
FIGURE 1
WHITE -
YELLOW -
POSITIVE
SYNC
RED - POSITIVE
BLUE -
FLASH PATTERN SELECT
(MOMENTARY TO GROUND),
DIM - POSITIVE
Page 2 of 4
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