BusSecure User Manual
DVR Installation and Wiring
0150-0263A / May 2003
21
3.2.4 A
UDIO
C
ONNECTIONS
1)
Remove the P2 terminal block (
in Figure 22)
from the DVR back assembly.
2)
Connect the audio and power cables from the
microphone as shown in Figure 29.
Note:
For instructions on making wiring connections at the microphone
end, refer to the instructions provided by the manufacturer.
3.2.5 I
NPUT
P
OWER
C
ONNECTIONS
Power is supplied through the DVR’s four-pin Molex connector, located on the DVR Rear Panel Assembly
(
in Figure 22). The following connections from the vehicle junction box must be made to the DVR:
+12-VDC continuous with 6-amp circuit breaker source, circuit battery ground, chassis ground, and
+12-VDC ignition/engine running with source fused not greater than 1 amp. See Figure 30.
1)
Run a four-conductor 18-AWG wire from the
vehicle power source to the DVR location.
2)
Make connections to the vehicle source (contact the
vehicle manufacturer for information on connecting
to the vehicle power source).
3)
Crimp the wire pins using a Molex crimper, and
make connections to the DVR’s four-pin Molex
according to Figure 30.
4)
Test the four-pin Molex wire-harness for power
(both continuous 12 VDC and engine
running/ignition).
Note:
For a working definition of engine running/ignition,
contact the vehicle manufacturer.
5)
Plug the Molex connector into the power connection on
the DVR Rear Panel Assembly
(
in Figure 22).
Check the power connections with a voltage meter
to ensure correct polarity and connections.
Twisted-pair power cable
Audio cable (shielded)
12 VDC continuous battery:
12 VDC: 10 - 15-amp circuit breaker
Circuit battery ground
Chassis ground
12 VDC engine run/ignition:
12 VDC: minimum of 6amps,
no greater than 12 amps
Figure 30. Input power wiring to DVR
Figure 29. Audio connections
17 18 19 20
12
V
D
C
G
N
D
A
U
D
IO
+
A
U
D
IO
-
B
A
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