This document provides installation instructions for a Laser DefuserPlus device. It includes a parts list and diagrams showing how to mount the laser alert light, piezo beeper, and defuser unit in various locations on the vehicle, including the front or rear license plate, dash, or a universal bracket. Wires are run from the defuser unit to the interior and connected to provide alerts from both laser detection and an integrated radar detector unit.

1. ELECTRONICS TM
LASER DEFUSERPLUS
INSTALLATION INSTRUCTIONS
PARTS KIT
Parts Kit includes the following:
A
A- (1) Universal Mounting Bracket
B- (1) Red L.E.D. Laser Alert Light
B C
C- (1) Piezo Beeper w/ “O” Ring Tape
D- (1) Double Stick Tape Strip
E- (2) 36” - 20 ga. Grounding/Power Wires
D
F- (1) 3 AMP Fuse Assembly
G- (4) Barrel Connectors E
F
H- (2) 1” - 1/4” x 20 Nylon Bolts
I- (2) 1 1/2” - 1/4” x 20 Nylon Nuts
J- (8) 1/4” x 20 Nylon Bolts
K- (2) #6 x 1/4” Screws G H I
L- (3) #10 x 3/4” Screws
M- (1) 1/2” Self Tapping Screw J K L M N
N- (1) 22-16 ga. Ring Terminal
IMPORTANT - PLEASE READ BEFORE INSTALLING
When installing the Laser DefuserPlus outside of the system’s license plate frame, the unit should be mounted as
close to the center of the vehicle as possible, without obstruction. The mounting location of the Laser DefuserPlus
is important, as police laser gun operators are trained to aim for the flat, reflective surface of a targeted vehicle’s
front license plate. In states that do not require a front license plate, operators will traditionally aim for the front,
center of the vehicle. This procedure allows the operator to effectively "bounce" the laser signal back to the gun
to calculate the vehicle’s speed.

2. Note: When integrating the Laser DefuserPlus with the K40 remote radar system, the Laser DefuserPlus
will utilize the same warning light/speaker(s) as the K40 remote. Therefore, you will not
need to install the red L.E.D. alert light or piezo beeper that come with the Laser DefuserPlus.
LASER L.E.D. LIGHT
1. For best visibility, choose a mounting location for the laser L.E.D.
as close to the vehicle gauges as possible. See diagram A1.
2. Check for proper clearance behind the area where the L.E.D.
will be installed (approximately 1”), and drill a 3/16” hole in the
chosen location. See diagram A2.
3. Route the L.E.D. wires under the dash per diagram A3 and
connect according to the appropriate block diagram.
DIAGRAM A1
ALERT
LIGHT
1"
RED ALERT L.E.D.
GREY L.E.D. BLACK L.E.D.
WIRE WIRE
DIAGRAM A2 DIAGRAM A3
PIEZO
LEFT AIR BEEPER
PIEZO BEEPER VENT
1. For maximum audio output and concealment, mount the
piezo beeper in the driver’s left air vent. See diagram B1.
2. Use the supplied double stick “O” ring tape
to mount the piezo beeper.
3. Route the piezo beeper wires through or under the dash
per diagram B1 and connect according to the appropriate RE
D
block diagram. WI
RE
BLACK WIRE
DIAGRAM B1
FRONT LASER DEFUSERPLUS
LICENSE PLATE MOUNT
1. Remove the mounting bolts and any existing frame or
cover from the license plate. Remove license plate.
See diagram C1.
FACTORY LICENSE
PLATE BOLTS
DIAGRAM C1

3. 2. Position the Laser DefuserPlus around the existing front license
Note: For optimum per-
plate and mount it against the factory license plate bracket. formance, the DefuserPlus
Use the existing mounting bolts or K40 nylon bolts to secure the must be mounted parallel to
DefuserPlus frame and license plate to the bracket. the ground. Use the supplied K40
See diagram C2. nylon nuts and bolts to correct the
mounting angle of the DefuserPlus
DEFUSERPLUS
either up or down as needed.
On some vehicles, it may be necessary
BOLTS
to adjust or reposition the factory
FACTORY
MOUNTING license plate bracket to achieve the
LOCATION
parallel mounting.
On vehicles that have only one set of
bracket mounting holes, it is recom-
mended that the Laser DefuserPlus
LICENSE
PLATE and the license plate be bolted
together to eliminate any vibration.
LASER DEFUSERPLUS
LICENSE PLATE
MOUNTING NUTS Caution:
Avoid hot or moving parts.
DIAGRAM C2
3. Route the black and clear zip cord wires into the engine compartment either through the grill or under the
bumper. See diagram C3.
4. Pass both the black and clear zip cord wires towards the vehicle’s firewall and through an existing rubber
grommet into the vehicle’s interior. See diagram C4.
5. Connect wires according to the appropriate block diagram and insert the 3 amp fuse into the fuse holder.
Secure the watertight fuse cover. Turn on the ignition key to verify operation.
TO VEHICLE
THROUGH INTERIOR
FIREWALL
CLE
AR
BLA
CK
RUBBER
GROMMET
CLEAR
BLACK
DIAGRAM C3 DIAGRAM C4
UNIVERSAL MOUNTING BRACKET
1. Choose a mounting location inside the lower air intake vent or
grill that has a clear, unobstructed view of the road.
DEFUSERPLUS
2. Separate the Laser DefuserPlus module from the license plate MODULE
frame by removing the two screws on the backside of the SCREW
DEFUSERPLUS
frame. See diagram D1. FRAME
DIAGRAM D1

4. 3. Determine which holes on the universal mounting brack-
et will be used to mount the Laser DefuserPlus to the car.
Remove the unused mounting holes on the bracket as
needed. See diagram D2.
DIAGRAM D2
4. Apply the supplied double stick tape directly to the Laser DefuserPlus and position the DefuserPlus to the
universal mounting bracket with the included 1/4” screws. See diagram D3.
BRACKET
BRACKET
TAPE TAPE
DEFUSER DEFUSER
WITHOUT WITH
HORIZONTAL HORIZONTAL
TABS TABS
1/4” SCREW 1/4” SCREW
DIAGRAM D3
5. Install the Laser DefuserPlus to the desired mounting surface using included 3/4” screws or nylon mounting nuts
and bolts. See diagram D4. For optimum performance, make sure DefuserPlus is mounted parallel to the ground
as close to the center of the vehicle as possible. See diagram D5.
WITHOUT WITH
HORIZONTAL HORIZONTAL
TABS TABS
DIAGRAM D4
INCORRECT INCORRECT CORRECT
DIAGRAM D5

5. 6. Route the black and clear zip cord wires into the engine compartment either through the grill or under the
bumper. See diagram D6.
7. Pass both the black and clear zip cord wires towards the vehicle’s firewall and through an existing rubber
grommet into the vehicle’s cockpit. See diagram D7.
8. Connect wires according to the appropriate block diagram and insert the 3amp fuse into the fuse holder.
Secure the watertight fuse cover. Turn on the ignition key to verify operation.
THROUGH TO VEHICLE
FIREWALL INTERIOR
CLE
AR
BLA
CK
RUBBER
CLEAR
BLACK
GROMMET
DIAGRAM D7
DIAGRAM D6
Note: For optimum per-
REAR LASER DEFUSERPLUS formance, the DefuserPlus
must be mounted parallel to
LICENSE PLATE MOUNT the ground. Use the supplied K40
nylon nuts and bolts to correct the
1. Remove the mounting bolts and any existing frame or cover mounting angle of the DefuserPlus
from the rear license plate. Remove license plate. either up or down as needed.
See diagram E1. On some vehicles, it may be necessary
to adjust or reposition the factory
2. Position the Laser DefuserPlus around the existing rear license license plate bracket to achieve the
plate and mount it against the factory license plate bracket. parallel mounting.
Use the existing mounting bolts or K40 nylon bolts to secure On vehicles that have only one set of
the DefuserPlus frame and license plate to the bracket. bracket mounting holes, it is recom-
See diagram E2. mended that the Laser DefuserPlus
and the license plate be bolted
together to eliminate any vibration.
DEFUSERPLUS
BOLTS
FACTORY LICENSE FACTORY
PLATE BOLTS
MOUNTING
LOCATION
LICENSE
PLATE
LASER DEFUSERPLUS
MOUNTING NUTS
LICENSE PLATE
DIAGRAM E1 DIAGRAM E2

6. 3. Route the black and clear zip cord wires into the trunk, through the passenger compartment, along the driver’s
side, and under the dash per diagram E3.
4. Connect wires according to the appropriate block diagram and insert the 3amp fuse into the fuse holder.
Secure the watertight fuse cover. Turn on the ignition key to verify operation.
TO L.E.D. LIGHT
AND PIEZO BEEPER DEFUSER
DIAGRAM E3
UNIVERSAL MOUNTING BRACKET
1. Remove the mounting bolts and any existing frame or cover from the rear license plate. Remove license plate.
See diagram F1.
2. Separate the Laser DefuserPlus module from the license plate frame by removing the two screws on the back-
side of the frame. See diagram F2.
FACTORY LICENSE
PLATE BOLTS
DEFUSERPLUS
MODULE
SCREW
DEFUSERPLUS
FRAME
DIAGRAM F1 DIAGRAM F2
3. Remove the 3 unused horizontal mounting tabs from the top of the universal mounting bracket. See diagram F3.
4. Apply the supplied double stick tape directly to the Laser DefuserPlus and position the Laser DefuserPlus to the
universal mounting bracket with the included 1/4” screws. See diagram F4.
BRACKET
TAPE
DEFUSER
WITHOUT
1/4” SCREW HORIZONTAL
TABS
DIAGRAM F3 DIAGRAM F4

7. 5. Position the Laser DefuserPlus against the license
plate and mount it to the factory license plate
bracket using the existing mounting bolts or K40
nylon bolts. See diagram F5.
6. Route the black and clear zip cord wires into the
trunk, though the passenger compartment, along
the driver’s side and under the dash per diagram F6.
7. Connect wires according to the appropriate block
diagram and insert the 3amp fuse into the fuse
holder. Secure the watertight fuse cover. Turn on
the ignition key to verify operation. DIAGRAM F5
TO L.E.D. LIGHT
AND PIEZO BEEPER DEFUSER
DIAGRAM F6

8. LASER DEFUSERPLUS
BLOCK DIAGRAM
BLACK
ZIP CORD
LASER
DEFUSERPLUS
FUSE
CONNECTION
COPPER 3AMP
CLEAR
ZIP CORD +12V
IGNITION
ON
COPPER
SILVER
CHASSIS
SILVER GROUND
GREY
BLACK
RED
PIEZO
BEEPER
BLACK
TO +12 VOLT
IGNITION ON
FUSED SOURCE
LASER
ALERT
L.E.D.
Note: When installing front and rear Laser DefuserPlus units,
use a separate 3amp fuse for each Laser Defuser.
LASER DEFUSERPLUS/K40 REMOTE RADAR SYSTEM
INTEGRATION DIAGRAM
BLACK
ZIP CORD
LASER
DEFUSERPLUS
FUSE
CONNECTION
COPPER 3AMP
CLEAR
ZIP CORD +12V
IGNITION
ON
COPPER
SILVER
SILVER CHASSIS
(NOT USED) GROUND
K40 REMOTE
RADAR VOLUME
CONTROL MODULE
YELLOW
Note: When integrating front and rear Laser DefuserPlus units, both of the clear/copper
wires from the two units can be directly connected to the yellow volume control
module wire from the K40 remote Radar Detector.
ELECTRONICS TM 44533 3/02