Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704 (800) 453-1141
Copyright 2003
Page 6 of 10
370-894-1B
Back Up Alarm Electrical Connection
The PreView
tm
sensor provides a normally open relay contact that can be used to activate an
external back up alarm. The PreView
tm
system activates this relay output whenever an object
is detected. Connect the orange and white wires on the sensor harness as shown below if a
back up alarm is desired.
N
N
O
O
T
T
E
E
:
:
The PreView
tm
sensor does not provide power for back up alarm use.
Display Unit Installation
The display unit should be mounted where the vehicle operator can easily view it while
backing. The ideal location for this is on the dash positioned by either windshield pillar. This
will allow the operator view of the display while also looking out one of the side mirrors.
The display unit harness should be taken into consideration when selecting a mounting
location for the display. Since the connection between the display and sensor harness is not
watertight, it should be routed in such a manner so it is not exposed to the outside
environment.
The PreView
tm
display unit comes equipped with a mounting bracket and hardware. If
desired, the display unit can be mounted to the display bracket with the supplied hardware.
This bracket can then be mounted in the vehicle cab as desired.
Cable Installation
The interconnect cable between the sensor and display is 25 feet (7.6M) in length. If the
distance between the sensor and display is greater than 25 feet, contact Preco for additional
cable extensions. Cables come in 5, 10, 15, and 25 lengths.
Routing of the cable should start at the sensor since the display end comes equipped with a
grommet to allow sealing the entry point into the cab. Allow for a small service loop in the
cable at the sensor and secure the cable every few feet (~1M) with tie wraps. When ready to
enter the cab, drill a 9/16” (14mm) hole and feed the display connector through. Once the
connector is through, the grommet can then be pulled into the hole until snug. The remaining
length of cable is then routed to the display unit and the connectors are latched together. Care
+12 VDC
PreView (Orange Wire)
PreView (White Wire)
Ground
+
-
