Confidential Page
6
6/23/2014
CABLE INTERFACE
Main Harness Connections in Detail
RED and White (+) 12volt Input When Connected to Truck
Locate the Red wire and the White wire found on the cable connected to the
GPS unit. The red wire AND the white wire must be connected to a 12-volt
source from the vehicle that will be connected to the trailer. (See optional
Refrigerated Trailer instructions on the next page) It's important that the 12 volt
power source maintains 12 volts at all times the trailer is in motion.
BLACK (-) Chassis Ground Input
Locate the Black wire found on the cable connected to the GPS unit. The black
wire must be connected to a solid chassis ground uninhibited by paint or plastics.
It is important that you do not use any floating grounds from the vehicles
electrical system. Always connect the ground directly to the chassis body and
secure with a factory bolt or aftermarket screw insuring wire to metal connection.
It is also advised that you connect a jumper to the pin in your trailer wiring socket
that is the “Ground return to towing vehicle”
SAE J560 and J1067 Wiring Circuits
Terminal Color
Lamp and Signal Circuits
1 White
Ground return to towing vehicle
2 Black
Clearance, side marker,
3 Yellow
Left turn signal and hazard lamps
4 Red
Stop lamps and antilock devices
5 Green
Right turn signal
6 Brown
Tail and license plate lamps
7 Blue
Auxiliary
Note:
Trailer trackers are shipped with NO
charge on the internal battery. The trailer must
be attached to a truck for it to be powered; it
takes 24-48 hours to completely charge the
internal battery.
Note: It is imperative that the units wiring is connected to pins that will be
powered by ALL trucks in your fleet. Use a multimeter to check the connection
coming from your trucks to verify how your trucks are wired. If a large
percentage of your trucks do not provide power to the auxiliary power pin you
may consider wiring the units to the marker lights. (Under this scenario the
device will ONLY receive external power when the lights are on. If you use this
method we strongly recommend you have your drivers always drive with their
lights on.)
WARNING: IT IS IMPORTANT THAT ALL WIRING CONNECTIONS ARE SECURE
AND WATERTIGHT FOR RELIABLE OPERATION OF THE UNIT.
