Sierra Wireless MP 875 User Manual
Page 32
MP875 Modem User Guide
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Note: Electrical installations are potentially dangerous and should be
performed by personnel thoroughly trained in safe electrical wiring
procedures for vehicles.
Power connector
Note: Connector part numbers:
39-01-2040 or 39-01-2045. Pins
part number: 39-00-0039.
The power harness connects to the MP modem with a Molex
connector.
Power connector (Molex) pinouts
The pinouts for the Molex connector on the power harness are:
Figure 3-6: Pinouts for the power harness.
The battery (red) and ignition sense (white) wires in the power
harness include 5 A fuses. The black ground wire is not fused.
(See “Ground the power harness” on page 34.) Replacement
power harnesses are available from Sierra Wireless.
Note: The battery cable used for a car, truck, or other mobile
connection must be less than 3 meters in length.
Vehicle installation
This section applies to installing the MP modem in a vehicle. If
you are installing it in an office, see “Office installation” on
page 35.
Ignition sense on/off wiring
This section only applies to installing an MP modem in a
vehicle. If you are installing the MP modem in an office
building, use the AC/DC adapter.
White wire
(Ignition sense)
Red wire
(Battery)
Unused
Black wire
(Ground)