DVM-250/DVM-250Plus Installation Guide 860-00129-00 Rev C
Copyright © 2010-2015 Digital Ally, Inc. 3-4
Interface Box
The Interface Box (IF Box) must be securely mounted on a solid area of the
vehicle structure in a moisture free location where it can be easily accessed.
Possible mounting locations include:
• Under the dash on the passenger side.
• Behind the kick panel on the passenger side (or driver side).
• Screwed into the transmission tunnel sheet metal below the dash.
On some vehicles this may not be possible due to extreme heat radiated from the transmission.
• Under the seat on some SUV-type vehicles.
• Behind a panel on the right hand side of the dash (nearest to the door).
Do not place the IF Box directly on floorboard or mount it in areas where it could be
exposed to moisture such as air conditioner condensation, accidental liquid spills,
rain, snow, mud, or other elements that could be tracked into the vehicle from
outside the vehicle.
Do not place the IF Box in an area that will subject the unit to excessive heat such
as a transmission tunnel or engine firewall.
Do not drill into any hoses or wiring that may exist below the mounting screws.
Mount the IF Box
1. Use the IF Box to DVM cable as a gauge to estimate an appropriate location for mounting the IF
Box.
2. Once a suitable mounting location has been identified for the IF Box, verify that the shielding
strap can be securely connected to the metal surface of the vehicle chassis. If the shielding strap
does not reach a suitable metal surface, reposition the IF Box
appropriately.
3. Secure the unconnected end of the shielding strap to the vehicle chassis.
The shielding strap must be connected to a metal surface of the vehicle chassis to
prevent electrical interference. Failure to properly connect the shielding strap may
cause system operation issues.
DVM to Interface Box Cable Installation
1. Plug the connector of the IF Box to DVM cable into the back of the DVM.
2. Leaving slack in the cable at the mirror mounting bracket for DVM
adjustment, begin routing the cable from the DVM under the front edge
of the headliner down the windshield pillar towards the mounting
location for the IF Box. To conceal the cable, it may be necessary to
loosen the sun visor mounting bracket and/or other trim pieces to allow
the cable to be tucked in behind the headliner.
Do not route wiring and cabling over sharp metal edge. Avoid running the cable
parallel to other wiring and/or antenna coax from other equipment in the vehicle. To
prevent electrical shorts or breakage in the wiring and cabling, do not allow wiring
and cabling to be pinched behind trim pieces, panels, or other physical objects.
3. Secure the cable using Velcro or standard tie wraps as required.
4. Plug the remaining end of the IF Box to DVM cable into the IF Box.
Step 3: Interface Box Installation
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