Main Harness Connections in Detail
RED (+) Constant 12 volt Input
Locate the Red wire found on the 20-pin connector supplied with the GPS unit. The
red wire must be connected to a constant 12-volt source from the vehicle to power
the GPS unit. It's important that the 12 volt power source maintains 12 volts at all
times.
BLACK (-) Chassis Ground Input
Locate the Black wire found on the 20-pin connector supplied with 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 vehicle's
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.
WHITE (+) Ignition Input
Locate the white wire found on the 20-pin connector supplied with GPS unit. The
white wire must be connected to a true ignition 12-volt source from the vehicle. This
connection is used to monitor the engines on/off state. It's important that the
switched 12-volt source is (0) zero when the engine is off and switched 12 volts with
the engine cranking and running.
WARNING:
White wire must be connected for the
GPS receiver to work properly!
Blue - Warning Light Master
This input requires a transition from 0v to 12v. Some bus models have 12v when the
WLM is off and 0v when on and others are opposite. We will need to know which
option during the activation process.
White/Blue Stripe - RFID scanner interface
Located on pin 17, this wire will be connected to the white wire in the Rfid scanner
cable.
Black - RFID Ground
Located on pin 16, this wire will be connected to the black wire on the RFID
scanner cable.
Yellow- RFID Buzzer
Located on pin 11, this wire will be connected to the brown wire on the RFID
scanner cable.
Red- RFID Power
Cut the red wire that is connected to the plug labeled AUX 2, this wire will be
connected to the blue wire on the RFID scanner cable.
Confidential
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3/6/2020