Users Manual Chapter 5

82 Thor VM3A Vehicle-Mounted Computer
12-48 VDC Vehicles (10-60 VDC Direct Connection)
Fuse Requirements for 10-60 VDC Direct Connection
• For 12VDC input, use the 10A fuse from the kit or a slow blow fuse that has a DC
voltage rating greater than 12VDC.
• For 24VDC input, use the 6A fuse from the kit or a slow blow fuse that has a DC
voltage rating greater than 24VDC.
• For 36VDC input, use the 4A fuse from the kit or a slow blow fuse that has a DC
voltage rating greater than 36VDC.
• For 48VDC input, use the 3A fuse from the kit or a slow blow fuse that has a DC
voltage rating greater than 48VDC.
Note: For North America, a UL Listed fuse is to be used.
Power Cable Identification for 10-60 VDC Direct Connection
The DC power cable is included with the dock:
Caution: For installation by trained service personnel only.
Caution: These instructions for use with VM1D Standard Dock and VM3D
Enhanced Dock only.
Warning: For proper and safe installation, the input power cable must be
connected to a fused circuit on the vehicle. If the supply connection
is made directly to the battery, the fuse should be installed in the
positive lead within 5 inches of the battery’s positive (+) terminal. If
an unused fuse holder is not available on the vehicle, use
VM3055FUSE (or equivalent) to install the fuse as shown below:
Caution: Twist the red and red/white wires together and twist the black and
black/white wires together before connecting to vehicle power.
Wire Color Connection
Red DC + (10-60 VDC)
Red/White DC + (10-60 VDC)
Black DC -
Black/White DC -
Green Ground
Blue Ignition Input (optional)