Digital BUS-WATCH
®
SD40
Page 20 of 72
Radio Engineering Industries, Inc.
640434 -- Rev 0 -- 9/30/2011
External Record Indicator / Event Mark Button Harness
TRIGGER
BUS-WATCH DVR, SD40
VIEW
REAR
ACC
12V OUT
POWER
GPS
710292
ETHERNET
SENSORS
CAM 1
CAM 3
CAM 2
CAM 4
TRIGGER
ALARM/PANIC CABLE
OEM
512024 - 20 FT.
512025 - 40 FT.
512023 - 40 FT.
511986 - 20 FT. AFTERMARKET
Figure 10: External Record Indicator / Event Mark Button Harness Connection
The optional Digital BUS-WATCH® external record indicator / event mark
button harnesses come in 2 different types of switches, both in 2 different lengths. The 2
types of switches are OEM and aftermarket. The OEM switch is rectangular and fits into
a standard size dashboard knockout. The aftermarket switch is round, for easier
installation in vehicles without spare switch knockouts. All of the cables plug into the
same port on the back of the DVR. See Figure 10 for connection illustration.
