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How the System Works
The Parking Sensor System determines obstacle distance by measuring the time needed for the
ultrasonic wave emitted by a sensor to reach an obstacle and for the sensor to receive the
ultrasonic wave reflected from the obstacle. Given the speed of the ultrasonic wave, the system
can then calculate and display the distance between the sensor and the obstacle.
To provide good coverage for both front and rear end of vehicle, the system comes with 6 or 8
sensors (2 or 4 front and 4 rear sensors).
♦
To have the look of factory installed system, the 6 or
8 sensors are in-bumper type (to be installed in the front and rear bumpers by drilling holes
through the bumpers).
♦
Controlled by +12V from the back up light, the rear sensors are
activated when the vehicle is put in reverse.
♦
Controlled by +12V from the brake light, the front
sensors are activated when parking/driving forward with foot-braking.
♦
For LED System (F2R4L,
F4R4L), it comes with a wired LED display which shows the distance of an obstacle in front or
rear of the vehicle (displayed as 0.0 if obstacle is within 1 ft or 0.3m). Seven (7) LED Lights
(Green/Yellow/Red) on each side of the distance display indicate both orientation of obstacles
and Safe/Warning/Stop zone. The audible alert (beeper) is built in the display with On/Off switch.
♦
For Beeper Only System (F2R4B ,F4R4B), it comes with a beeper (audible alert) only for easy
installation without cluttering the dash.
♦
The system beeps faster as vehicle gets closer to an
obstacle and sounds continuously when vehicle is within 1 ft or 0.3m from an obstacle.
Note:
the front sensors may continue to work for 20 more seconds after foot brake is released.
Tools Needed
Φ
21mm drill bit (include), drill, tape measure, chalk or marker, wire stripper, vinyl electrical tape,
cable/wire ties, voltage meter, screw driver set, pliers.
Note:
Use a bi-metal 22mm drill bit (not included) if drilling through metal bumpers. For metal
bumpers, holes drilled need to be slightly larger than diameter of sensors.
Installation and Wiring
IMPORTANT:
(a)
Read this manual thoroughly before proceeding to installation. You can also
have the system installed by a professional installer such as your local auto mechanic/auto
electrician/car stereo store. (b) Turn off the engine and ACC during installation. (c) Double
check that all wiring is correct before powering on the system. (d) During installation, avoid
flatting, perforating, cutting, and extending the wires of sensors to reduce unnecessary signal
loss. (e) Never pull the sensor cables too hard or sensors may not work properly or at all.
1. Installing the Control Box
a)
Find a flat and clean surface for the control box inside the vehicle near driver's side taillight
assembly but away from it for least 1 ft. As the control box is not water-proof type, you need
to mount the control box to a location that is protected from water. Keep it away from areas
of high heat, high humidity, direct sunlight, and electromagnetic devices.
b)
Place the control box in place temporarily without securing it to the vehicle as you may need
to adjust the location of the control box while wiring.
Note:
After the system is working
properly, use the double-sided self-adhesive pad (included) to secure it to the vehicle.
c)
Insert the 4-pin plug of the power cable for the control box into its 4-pin socket labeled
"PWR" on the front side of the control box. See Fig. 4 (LED System) or Fig.5 (Beeper Only
System).
Important Notes for Installing the Control Box:
Don't mount the control box near or under the dash or in the cab of a truck.
The control box is designed to be mounted near the rear end of a vehicle (near taillight
assembly) to avoid interferences from the engine which may cause false alert such as
continuous beeping and 0.0 display (LED System only).
If Installing the System to a Truck,
as the control box is not water-proof type, you may need to
first mount the control box in a small water-proof metal or plastic box (not included with the
system), then fix it to a location near the rear end of the truck.
