Vehicle Installation Instructions
WGD00085 REV B1
Page 20
Chassis Ground – Yellow Wire
It is imperative that the chassis ground wire is grounded properly
. The DVR is sensitive to ground loops
and any stray voltage that may be running through the frame ground of the vehicle. Ensure that the
chassis ground is connected to a good bare metal ground lug or bare metal screw/nut/bolt. Test the
wire with a volt meter (or multi-meter) and ensure there is no stray voltage.
The Chassis Ground cable
should not have any more than +/- .025 volts. Anything more will cause the DVR to be unpredictable
is operation. In Figure 29 the voltage reading is TOO HIGH.
Figure 29
Warning:
Improperly grounded chassis ground wire connections will result in unpredictable DVR
operation and performance.
Note:
WatchGuard Video recommends that the Chassis ground always be grounded to the
Negative (ground) post on the vehicle battery.
External Ground
Chassis Ground
