User's Manual

55
Date of Origin – 02/01/08
Loose fasteners that are allowed to operate for any period of time will result in irreversible suspen-
sion damage and possible loss of vehicle control. Retightening a worn fastener will not cor-
rect a situation created by loose operation!
!
ELECTRICAL SYSTEM MAINTENANCE
Your Timpte trailer utilizes an internally grounded, automotive style electrical system that meets or
exceeds all of the requirements of FMVSS 108.
A 7-way plug is located on the front of your trailer. Each terminal carries current from your tractor
electrical source through a circuit to the various electrical devices on the trailer. Individual circuits
may be traced by the various wire colors. Listed below is a schedule of the color code of the
primary electrical circuits.
Blue – ABS Constant Power
Red – Stop Lights
Black – Red Clearance Lights
Brown – Amber Clearance Lights
Use dielectric grease for all electrical connections to prevent corrosion between electrical junc-
tions and to enhance electrical conductivity. (Failure to do so may void warranty.)
Do Not splice any electrical harness conductor. Splices may create open circuits or create the
potential for “dead shorts” or “ground” issues within a circuit. Always replace damaged harnesses
and conductors promptly. Splicing or modifying the harness may void warranty.
CAUTION – FMVSS #121 safety standard for Air Brake System required as of
3/1/1997 that trailers supply constant power via the blue center pin of the 7 way
to the ABS system. As of 3/1/2001, all trailers were required to have an ABS
system that provided for activation of the system status warning lamp inside
the tractor cab.
Tractors and trailers using a single 7 way electrical connector will have
constant power for the ABS on the center pin when the key switch is “on” and
the ABS unit will communicate to the in cab system status warning lamp.
Green – Right Turn Signal
Yellow – Left Turn Signal
White – Ground