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ER-SF1 Event Recorder with J1939 Network Instructions for Self Installation
Bottom fuse is
original circuit
fuse.
Top fuse is new
fuse for event
recorder.
Basic Event Recorder Electrical Connections
A minimum of three connections are required for the event recorder to function. These leads are
found on the Vehicle Interconnect Cable terminating at the female end of the Molex connector.
The red and black leads have 5-amp inline fuses; the brown lead has a 1-amp inline fuse.
Required Connections
1. Red wire: Provides primary power and must be connected to a continuous power source.
2. Brown wire: Functions as an ignition-sense, used by the event recorder to perform
functions such as activating the IR Illuminator when the vehicle ignition is switched on.
3. Black wire: Functions as ground.
Connect the RED WIRE to a 12V-24V power source that is ALWAYS ON
CAUTION:
THIS IS A FUSED CONNECTION. DO NOT CUT OFF OR REMOVE THE FUSE
HOLDER.
The event recorder always remains "on." This requires a 12V or 24V power source that is not
controlled by the key nor any other device or switch. Typically, this connection is made just after
the fuse box on the battery-side of any vehicle control modules. Use a voltmeter to make sure the
circuit provides continuous 12V or 24V power when the key is removed from the ignition and all
lights, devices and switches are off.
Ensure Sufficient Current Draw: If you're tapping into an existing vehicle wire, make sure it can
handle the additional current draw of the event recorder. A wire that reads 12V on a voltmeter
may not necessarily be able to supply enough current to the existing circuit and the event
© 2017 Lytx, Inc. – Confidential & Proprietary – For Velociti's Use Only Re Beta ER-SF1 Installations. Page 19 of 26
Must be sealing
style connector.
"Hot" or powered leg.
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