Code 3 Motorcycle Sirens 3951, 3955 - Manual (Page 20)

3
Unpacking & Pre-installation
After unpacking your 3955 series siren, carefully inspect the unit and associated parts for any damage that may
have been caused in transit. Report any damage to the carrier immediately.
Installation & Mounting
The 3955 series siren is designed to be mounted to the optional equipment Harley Amplifier Mount, which can
be obtained from Harley Davidson. A weatherproof connector is provided for connection to the controller
harness provided with the Harley Davidson motorcycle.
Connections
(see Figure 1), motorcycle wiring harness.
Speaker - Connect to 100W ( 11 ohm ) speaker leads.
+12V - Connect (14 AWG wire) to a positive +12 volt DC source. It is recommended that the user
protect this wire with a 10 Amp fuse or circuit breaker located at the source.
- NEG (Ground) - Connect (14 AWG wire) to the negative terminal of the battery. This supplies ground
(earth) to the siren.
AIRHORN - AIRHORN switch input . Circuit is configured to accept positive signals only.
WAIL - WAIL switch input . This switch should be a rocker type switch which maintains it's position
until switched OFF by the user. This circuit is configured to accept positive signals only.
Microphone High - MIC HI signal from the user supplied, common microphone interface.
Microphone Low - MIC LO signal from the user supplied, common microphone interface.
PA PTT - PTT signal from the user supplied common microphone interface.
WARNING!
CONNECTION OF A 58 WATT SPEAKER TO THE SPKR TERMINAL WILL CAUSE THE
SPEAKER TO BURN OUT, AND WILL VOID THE SPEAKER WARRANTY!
The sound projecting opening should be pointed forward, parallel to the ground, and not
obstructed or muffled by structural components of the vehicle. Concealed or under-hood mounting in
some cases will result in a dramatic reduction in performance. To minimize this reduction, mount the
speaker so the sound emitted is projected directly forward and obstruction by vehicle components such
as hoses, brackets, grille, etc. is minimized.
Electromechanical sirens and electronic siren speakers should be mounted as far from the
occupants as possible using acoustically insulated compartments and isolation mountings to minimize
the transmission of sound into the vehicle. It may be helpful to mount the device on the front bumper,
engine cowl or fender; heavily insulate the passenger compartment; and operate the siren only with the
windows closed.
Each of these approaches may cause significant operational problems, including loss of siren
performance from road slush, increased likelihood of damage to the siren in minor collisions, and the
inability to hear the sirens on other emergency vehicles.
APPROPRIATE TRAINING OF VEHICLE OPERATORS IS RECOMMENDED TO ALERT THEM
TO THESE PROBLEMS AND MINIMIZE THE EFFECT OF THESE PROBLEMS DURING
OPERATIONS.
WARNING!
!
All devices should be mounted in accordance with the manufacturer’s instructions
and securely fastened to vehicle elements of sufficient strength to withstand the forces
applied to the device. Ease of operation and convenience to the operator should be the
prime consideration when mounting the siren and controls. Adjust the mounting angle to
allow maximum operator visibility. Mount the microphone clip in a convenient location to
allow the operator easy access. Devices should be mounted only in locations that
conform to their SAE identification code as described in SAE Standard J1849.
Controls should be placed within convenient reach* of the driver. In some vehicles,
multiple control switches and/or using methods such as “horn ring transfer” which utilizes
the vehicle horn switch to toggle between siren tones may be necessary for convenient
operation from two positions.
*Convenient reach is defined as the ability of the operator of the siren systems to
manipulate the controls from his normal driving/riding position without excessive movement
away from the seat back of loss of eve contact with the roadway.