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3-Wire Installation
STEP ONE
Chassis ground-Connects to the BLACK wire
of the Power Harness.
A clean, bare-metal chassis ground point, battery ground,
or electrical grounding bus bar where the resistance
between the battery of the vehicle and this point is less
than 2 ohms.
STEP TWO
Constant 12V+ (Battery)-Connects to the
RED wire of the Power Harness. Use fuse in connection.
A source of positive 12Vdc voltage that continuously
has power regardless of the status of the ignition switch
or any accessories. This source should supply between
11 and 14.5 volts of power normally and be capable of
supplying at least 3A of current.
STEP THREE
Switched 12V+ (Ignition/hour-meter)-
Connects to the WHITE wire of the Power Harness.
Use fuse in connection.
A source of positive 12Vdc voltage that shows 0
volts when the engine is not running and battery
potential (usually 11-14.5 volts) when the engine IS
running.
NOTE:
The recommended point of connection for the
BLACK and WHITE wires in a Mobile Equipment Manager
installation would be directly at the factory hour-meter.
This will provide the most accurate monitoring of engine
runtime. Contact Pedigree Technologies if you have
questions about alternate connection points.
This is acceptable assuming that the (+) wire for the
hour-meter is the one that transitions from ON to OFF
with the engine. If your particular hour-meter has a
switching GROUND connection, this method is NOT
acceptable!
PedigreeTechnologies.com | Support: (701)-499-0022
Red - Power
Black-Ground
White - Ignition
Black Wire
Ground
White Wire
(Switched 12v)
3
Mobile Equipment Manager
(TTU2830/TTU2840)
Power Cable
Multicolor Wire
Bundle Not Used
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