920-0534-00 Rev. D
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(Up to 32 light heads can be Synchronized by connecting their yellow wires).
When the yellow wires of the light heads are connected together, the group with Ph1 flash patterns will flash simultaneously. If the light heads in the second group are set
to Ph2 flash patterns, they will flash alternately with the first group. To simplify the set-up of a synchronized installation, the following process is recommended:
1. Before connecting the yellow wires together, choose the desired flash pattern for each light head.
The patterns chosen must have the same flash rate for all light
heads intended to be synchronized. (By definition a 75fpm light head will not sync with at 120fpm light head)
To avoid confusion set each light head
individually to the chosen flash pattern using the blue pattern select wire. Ph1 light heads will alternate with Ph2 light heads and simultaneously with all other light
heads set to Ph1. Ph2 light heads flash simultaneously with all other light heads set to Ph2. It is also strongly recommended that the same style of flash pattern
be used on all heads to produce the most effective warning pattern.
2. Connect the yellow synchronization wires together and check that the light heads are flashing in a synchronized manner as expected. If a pattern for one light head ap
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pears to be wrong, keep the yellow wire connected and use the blue pattern select wire to cycle forward or backward for that individual light head until the correct
pattern is selected. Once that is completed verify the light head is synchoronized correctly.
Notes on Synchronizing and Phase (Sync Ph):
Notes on Dim Control:
The light head intensity may be reduced if necessay. The Blue wire when connected to positive will reduce the intensity to 25% for SAE patterns.
NOTE: The blue wire must be disconnected from any voltage when not activating DIM nor changing flash patterns.
Pattern Select Operation:
Notes on Choosing Flash Patterns:
The light head flash pattern may be changed by touching the Blue wire to ground for the following intervals (while the light head is flashing):
NOTE: The blue wire must be disconnected from any voltage when not activating DIM nor changing flash patterns.
- When the light head signal becomes steady, disconnect the Blue wire and the flash pattern will increment by one pattern.
- When the light head signal becomes steady, then goes off, disconnect the Blue wire and the flash pattern will decrement by one pattern.
- When the light head signal becomes steady, then goes off, then becomes steady again, disconnect the Blue wire and the flash pattern will reset to the factory default
pattern.
- When the light head signal becomes steady, then goes off, then becomes steady again, then goes off again, disconnect the Blue wire and the flash pattern will become
set to the steady burn mode.
Wiring Instructions:
RED: Positive, (5A fuse required)
WHITE: Positive, (5A fuse required)
BLACK: Negative
BLUE: Pattern select to negative -- Dim control to positive
YELLOW: Synchronized Function (Up to 32 units can be Synchronized)
Important!
This unit is a safety device, and it must be
connected to its own separate, fused power point to as-
sure its continued operation should any other electrical
accessory fail.
A variety of flash patterns may be chosen for the light head. The Dual Stack multi color light heads are split horizontally and vertically providing 4 separate lighted areas
in each light head that may be chosen to operate alternately for patterns that flash using various color combinations. This allows patterns that flash up-down, right-left,
diagonally, and to rotate. The areas are denoted as follows:
Primary color - upper level colors 1&3 and lower level colors 5&7 (color1 and color5 on the left side and color3 and color7 on the right, typically the same color on each
level)
Secondary color - upper level colors 2&4 and lower level colors 6&8 (color2 and color6 on the left side and color4 and color8 on the right, typically the same color on
each level).
A separate flash pattern may be assigned for the power wires red, white, or both connected together and the pattern operated depending which wire or wires are ener
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gized. Power the red or the white wires (or both together) then use the pattern select blue wire (touch to ground) to select the chosen flash pattern from the list below.
Note: The red and white wires powered together have patterns that always use both colors (except Pattern #1 - Default Steady Burn).
See the legend at the top of the pattern list for compliance with various standards.
Caution!
When drilling into any vehicle surface,
make sure that the area is free from any electrical wires,
fuel lines, vehicle upholstery, etc. that could be damaged.
Installation and Mounting:
To mount the light head, use the bezel as a template to mark the mounting holes. The
supplied self-tapping #6 x 0.75” screws typically use 0.125” diameter holes but this
may vary depending on the type of material and the thickness being tapped. Provide a
minimum 0.50” diameter hole for the wires. Grommet the hole if possible and seal with
RTV sealant.
It is important to note:
The light head has 2 small round holes covered with vent membrane that must
face downward when mounting the light head.
