RST973 IN-VEHICLE INSTALLATION & USER MANUAL
9
Installation Overview
Intelligent Handset
Speaker
Microphone
Power LED
DB9 Comm
Port
ELECTRICAL LEGEND
RED = A+
Black = GND
Green = Auxiliary Power
Radio Mute & Horn Alert: Switch to ground when active
Horn Alert
11-32V DC Input
Radio
Mute
+
_
Negative
Ground
Positive
3A fuse
Accessory
1A fuse
Antenna
Beam RST100 back
D25 Connector
JOIN
RED wire for illustration only
Horn Alert
11-32V DC Input
Radio
Mute
+
_
Negative
Ground
Positive
3A fuse
Accessory
1A fuse
Antenna
Beam RST100 back
D25 Connector
JOIN
RED wire for illustration only