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SECTION 4
4.1
ELECTRICAL/LIGHTING SYSTEM
The electrical system is 12 volts DC and is primarily for the required lamps installed on the trailer. The
harness system installed on the trailer is internally grounded. The anti-lock brake system gets its power
through the middle pin/blue wire. The electrical circuit to the trailer is completed using a jumper cable from
the truck connected to the 7-way receptacle on the front of the trailer. The receptacle is equipped with a
hinged cover to protect it from dirt and water. Any wiring replaced should be standard copper wire not
smaller in gauge than the original. Replacement lamps and reflector devices should be properly marked
with certification for that usage, such as “DOT”.
Keep 7-way receptacle and wiring connectors clean and free of corrosion.
Any lamp/reflector replacement must conform to the existing system.
It is required by law that all trailers manufactured after March 1, 1998 have ABS. The law further states that
the Blue Wire #7 pin of the SAE 560 connector will provide constant power.
Your LUFKIN Trailer, as manufactured, meets or exceeds the requirements set forth in FMVSS 108 which
describes the various required lighting and reflectors The law also requires these trailers be equipped with
reflective tape that is so placed as to describe the general outline of the trailer when viewed at night so that
other motorists may be alerted as to its presence.
It is advised that the reflection tape and all lights must be maintained in constant working order by
replacement, cleaning, or other known acceptable methods.
Vendor files related to electrical/lighting are given below.
Trucklite User’s Guide
LINK TO VENDOR FILE
