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Connecting to Vehicle Power
Please review the proper wiring illustration, later in this document, before beginning power cable install. If connecting a VMC, the com-
puter must be powered off. If connecting a HHC cradle/dock, the cradle must be empty. The last connection must be to the vehicle
power source.
1. Connect the power cable to the VMC or the HHC cradle.
2.
Route the cable from the VMC or HHC cradle to the DC/DC power supply and, optionally for some VMCs, to the screen blanking
box.
3.
Cut the cable to length and strip the wire ends. If the screen blanking feature is not used for the Thor VX8 or Thor VX9, do not strip
the green and yellow wires.
4.
Route the power cable the shortest way possible. The cable is rated for a maximum temperature of 105°C (221°F). When routing
this cable, it should be protected from physical damage and from surfaces that might exceed this temperature. Do not expose the
cable to chemicals or oil that may cause the wiring insulation to deteriorate. Always route the cable so that it does not interfere with
safe operation and maintenance of the vehicle.
5.
Remove the lid from the DC/DC power supply.
6.
Attach the stripped wire ends to the output side of the DC/DC power supply.
Note: The input block has V
V
+ and V
- terminals. Wire colors depend on the type of device attached.
O
O
Please refer to the illustrations later in this document for equipment-specific
wire colors.
7.
Connect the ground wire from the VMC or HHC cradle to the GND terminal on the
input side of the DC-DC power supply.
8.
Route the wiring from the DC/DC power supply to the vehicle's electrical system.
Do not connect to vehicle power at this time.
9.
Strip the wire ends and connect to the input side of the DC/DC power supply.
10. Use looms and wire ties to secure all wiring as shown.
11. Reattach the cover with the screws.
12. If the screen blanking box is used for a Thor VX8 or Thor VX9 installation, attach the stripped green and
yellow wire ends to the box. Refer to the applicable following diagram for proper wiring connection.
13. If the screen blanking box is used for a Thor VM1 or Thor VM2 installation, connect a serial cable from
the COM port on the Mount Smart Dock to the box. Refer to the applicable following diagram for proper
wiring connection.
14. Connect the DC/DC power supply to the vehicle's electrical system as directed below:
Caution:
For battery powered vehicles:
V
+ is connected to battery positive.
IN
Vi
- must be connected to battery negative.
N
GND
ground.
15. While observing the fuse requirements specified above, connect the power cable as close as possible to the actual battery terminals
of the vehicle. When available, always connect to unswitched terminals in the vehicle fuse panel, after providing proper fusing.
ATTENTION:
For uninterrupted power, electrical supply connections should not be made at any point after the ignition
switch of the vehicle.
16. If the screen blanking box is used for a VMC installation, connect the box to vehicle motion circuitry and ground. Refer to the
applicable following diagram and the label on the screen blanking box for proper wiring connection.
17. Use proper electrical and mechanical fastening means for terminating the cable. Properly sized "crimp" type electrical terminals are
an accepted method of termination. Select electrical connectors sized for use with 18AWG (1mm
18. Provide mechanical support for the cable by securing it to the vehicle structure at approximately one foot intervals, taking care not to
over tighten and pinch conductors or penetrate the outer cable jacket.
50118845-001 Rev B 10/15
+, V
- and GND terminals. The output block has
IN
IN
must be connected to the vehicle chassis
© 2015 Honeywell International Inc. All Rights Reserved.
For internal combustion engine powered vehicles:
V
+ is connected to battery positive.
IN
Vi
- is connected to battery negative.
N
GND
is connected to the vehicle chassis ground,
which can also be battery negative.
2
) conductors.
Page 2
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