Whelen Engineering Company 900 Alpha User manual

Page 1
®
ENGINEERING COMPANY INC.
Automotive: Lightheads
Installation Manual:
900 Alpha Lighthead
©2003 Whelen Engineering Company Inc.
Form No.1 38 71 (111103)
Mounting:
1. Using the dimensions from the template, mark off and drill
the two 5/16” diameter vent tube holes and the 1” center
wire hole into the mounting surface. Make sure lighthead
will not interfere with existing equipment and be aware of
any items on the opposite side of the mounting surface.
2. Insert the two vent tubes extending from the rear of the
lighthead into their holes making sure that the lighthead is
properly oriented. Using a scribe or similar tool, mark off
the 4 mounting holes.
3. Using a .250” drill bit drill the four mounting holes and
install the 4 supplied grommets. Install a grommet
(customer supplied) into the 1” wire hole.
4. Using appropriately sized cable, extend the lighthead wires
to their connections. Fuse the +12VDC connections at 3
Amps and test the operation of the lighthead before
securing it to the vehicle.
5. Position the lighthead onto the mounting surface and
secure the lighthead to the vehicle using four #8 x 1½”
sheet metal screws. Make sure that the lighthead is
properly oriented (with the larger of the three LED groups
to the left).
Wiring:
1. Plug the interface cable (provided) into the 900ALPHA
lighthead connector.
2. The 9-position “D” connector on the interface cable will be
connected to one end of a customer supplied serial cable.
The other end of this cable will connect to the PC used to
program the lighthead.
3. Using appropriately sized wire, extend the free RED wire
to a switched +12VDC power source. Fuse this wire @ 3
amps.
WARNING! All customer supplied wires that connect to the
positive battery terminal, must be sized to supply 125% of
the maximum operating current and fused “at the battery”
to carry that load.
4. Using appropriately sized wire, extend the free BLACK
wire to chassis ground.
Software Installation:
1. Insert the software disc into the CD-ROM drive on the PC.
Locate and run the file named ‘900ALPHA.exe’ on this
disc.
2. Follow the on-screen instructions to install the
configuration software.
Programing the 900 ALPHA Lighthead:
1. Connect a 9-pin serial
cable to the interface
cable. Connect the
other end of this cable
into the serial port on
the PC.
2. With the lighthead on,
start the configuration
software.
3. Enter the desired code
in the appropriate box.
NOTE: The first
character MUST be a
LETTER; the second and third characters MUST be
NUMBERS.
4. Adjust the intensity of the display using the slider control.
The effective range is from 0 (lowest) to 255 (highest).
5. Press the ‘Program’ button to program the lighthead.
Grey
Black
WHELEN ENG. CO. INC.
SAE-STI-91 DOT
SAE-WW2W5-91
PATE NT PENDING
Red
Red
Red To PC
Serial Port
Black
Black
51 Winthrop Road
Chester, Connecticut 06412-0684
Phone: [phone]
Fax: [phone]
Internet: www.whelen.com
Sales e-mail: [e-mail]
Canadian Sales e-mail: [e-mail]
Customer Service e-mail: [e-mail]

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7.250"
3.625"
2.625"
5.250"
3.020"
3.020"
3"
3"
900 SERIES / MOUNTING DIMENSIONS
IMPORTANT: Templates may not be exactly to scale. Always check all measurements before drilling. Measurements are given in both Decimals and Fractions for convenience. For a more accurate measurement and installation, we recommend you use the Decimals.
.250" (1/4") mounting
hole for grommet
5/16" (.312") Hole
5/16" (.312") Hole
.250" (1/4") mounting
hole for grommet
.250" (1/4") mounting
hole for grommet
.250" (1/4") mounting
hole for grommet
1"
Wire Hole