Honeywell Thor VM3, User Manual, Page: 88 / 378

76 Thor VM3 with Microsoft Windows Embedded Compact 7 User Guide
12-48 VDC Vehicles (10-60 VDC Direct Connection)
Fuse Requirements
• 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
The DC power cable is included with the dock:
Note: Correct electrical polarity is required for safe and proper installation. See the figures below
for additional wire color-coding specifics.
The Thor VM3 DC input wires (Red, Red/White DC+ and Black, Black/White DC-) and
the Blue ignition input wire are galvanically isolated. The Green ground input is used for
electrostatic discharge (ESD) protection.
Caution: For installation by trained service personnel only.
Caution: Use caution when routing the power cable. See Power Cable
Cautions .
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. Use VM3055FUSE (or equivalent) to
install the fuse as shown below:
Wire Color Connection
Red DC + (10-60 VDC)
Red/White DC + (10-60 VDC)
Black DC -
Black/White DC -
Twist the red and red/white wires together and
twist the black and black/white wires together
before connecting to vehicle power. Green Ground
Blue Ignition Input
(optional)