Users Manual Chapter 5

Thor VM3A Vehicle-Mounted Computer 105
DC/DC Power Supply with Screws on Top of Lid
For this model, follow the diagram below to attach the power cable shield to chas-
sis ground:
•V
IN+ is connected to battery positive.
•V
IN- must be connected to battery negative.
Caution: Inspect the cable shield to verify it is connected to chassis ground. If
there is no connection from the cable shield to chassis ground, one
must be added at this time. Use a jumper wire to connect the cable
shield to chassis ground as shown below for the appropriate type of
power supply installed on the vehicle. A jumper wire, as shown in the
illustrations below, may be present to attach the chassis ground to
the white wire of the power cable. This wire is not necessary but can
be left in place if present. For proper screen blanking, verify the
yellow and green wires are attached to the screen blanking box as
shown in the illustrations below.
Circular
Power
Connector
DC/DC
Power
Supply
Supplied Power Cable
(Shielding to be trimmed)
5
6
1
3
Green
Yellow
Brown
White
Existing Circuitry on Vehicle
Forklift Battery
-Vo
+Vo
10A slow fuse
Close to power
source
Main Switch
VMX004VMCRADLE
Vehicle Mount
Smart Dock
-
+
-
+
MOTION
CIRCUITRY
3A fuse
+Vi
GND
Caution: For battery powered vehicles: