MLT-400i Installation Guide
Securing the Unit
11/18/2009
FMS MLT-400i Installation Guide 4.3
8
MLT-400i/400iO I/O Connection
Note, when installing the modem, leaving easy access to the serial cable will facilitate any
code updates.
If additional I/O connections are desired for analog/digital inputs or digital outputs, the wire
harness is defined below.
MLT-400i Wire Harness Description
Wire Color Use
Operating Range
Red
*
Constant power source. Not accessory power.
9-30VDC
Black
*
Chassis Ground
Ground
Green
*
True Ignition Source
9-30VDC
Purple
*
Signal Ground. Connect at analog sensor’s ground.
Ground
Orange
*
Analog/Digital IN # 0
0-5VDC
Brown
*
Analog/Digital IN # 1
0-5VDC
Grey
*
Analog/Digital IN # 2
0-5VDC
Blue
*
Digital IN # 0
3-30VDC
Yellow
*
Digital OUT # 1
12VDC, 50mA
White
*
Digital OUT # 2
12VDC, 50mA
Notes:
Cap Off any sensors not being used.
Securing the Unit
4
1.
Before securing the unit, typically under the dashboard, record the IMEI/Serial Number
(ESN), Vehicle Name (Asset Name), Odometer and if available Engine Hours on the
Installation Checklist in Appendix B.
2.
Use tie-wraps to mount the unit securely to a stable bracket.
3.
If possible, orient the unit so the LED indicators are visible.
4.
Do not place the unit near moving parts, or next to any of the vehicle’s pedals
5.
Loosely bundle any excess antenna cable, power wiring and unused I/O signals
6.
Leaving easy access to the 9-pin serial cable will allow for code updating.
