Users Manual Chapter 5

94 Thor VM3A Vehicle-Mounted Computer
8. Route the wiring from the DC/DC power supply to the vehicle’s electrical
system using the portion of the power cable previously cut off. 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. Connect the DC/DC power supply to the vehicle’s electrical system as directed
below:
•V
IN+ is connected to battery positive
•V
IN- must be connected to battery negative
• GND must be connected to the vehicle chassis ground
•V
IN+ is connected to battery positive
•V
IN- must be connected to battery negative
• GND must be connected to the vehicle chassis ground
13. While observing the Fuse Requirements for 50-150 VDC Power Supply, Screws
on Top of Lid, 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.
14. Use proper electrical and mechanical fastening means for terminating the
cable. Properly sized “crimp” type electrical terminals are an accepted method
Caution: For battery powered vehicles:
Caution: For internal combustion engine powered vehicles:
Caution: For uninterrupted power, electrical supply connections should not be
made at any point after the ignition switch of the vehicle.