User's Manual Part 1

Installing the MC3 System
MC3 Connectors
The top of the MC3 radio contains the power and communications connectors, as well as a
fabric and rubber handle used to carry the radio.
The connections on the MC3 are described in the following table.
ID Connector Description
1 Vehicle power
Input that receives the connector running to the vehicle
power source to provide power to the MC3.
In addition to wiring the power cable directly to the
vehicle, a cigarette lighter power cable is available for
emergency use only. Using this cable will disable the
power management functions of the MC3 and could
adversely affect system performance. Disconnect this cable
from the power source when not in use. Failure to do so
could result in a dead battery.
2 Main antenna Connector for the roof-mounted antenna cable.
3 Side-looker antennas
Extra connectors for optional side-looking, roof-mounted
antennas.
Do not use these connectors for the main MC3 antenna.
4 Power indicator An LED that turns on when the MC3 is receiving power.
5 GPS antenna Connects the MC3 to the roof-mounted GPS antenna.
6 USB Connects the GoBook to the MC3 radio.
7 Fuse holder
Holder accepts standard automotive 12V (15 amp) ATO
fuse (included) to protect internal circuitry from power
surges by the vehicle.
Hardware Installation Guide 13