Users Manual Chapter 5

84 Thor VM3A Vehicle-Mounted Computer
range) to the switched circuit to allow the computer to power on when the vehicle is
switched on and go into shut down (see note below) when the vehicle is switched
off.
Note: When the vehicle is switched off, the Thor VM3A treats this event as a power button
press. The default setting for a power button press is to power the device off, however
additional options are available on the Advanced tab of the Power Options control
panel.
•V
IN+ (red wire) is connected to battery positive. If there is a red wire and a red/
white wire, twist them together and connect to battery positive.
•V
IN- (black wire) must be connected to battery negative. If there is a black wire
and a black/white wire, twist them together and connect to battery negative.
• GND (green wire) must be connected to the vehicle chassis ground.
•V
IN+ (red wire) is connected to battery positive. If there is a red wire and a red/
white wire, twist them together and connect to battery positive.
•V
IN- (black wire) must be connected to battery negative. If there is a black wire
and a black/white wire, twist them together and connect to battery negative.
• GND (green wire) is connected to the vehicle chassis ground, which can also be
battery negative.
Existing Circuitry On Vehicle
Battery
Main Switch
-Vo
+Vo
Fuse - See
Fuse Warning
Ignition
See Caution statements
Quick Mount
Smart Dock
Circular
Power
Connector
COM1 or COM2
Connector
Cable for optional
screen blanking
connection
Red
Black
Green
Blue
Red/White (if present)
Black/White (if present)
Caution: For battery powered vehicles:
Caution: For internal combustion engine powered vehicles:
Warning: For proper and safe installation, follow the Fuse Requirements for
10-60 VDC Direct Connection.