Bendix Commercial Vehicle Systems TABS-6 ADVANCED SINGLE CHANNEL - Manual (Page 6)

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• Pigtail Wiring Harness: A power pigtail harness is
required, variations that include auxiliary sub-harnesses
are available, as needed. See Figure 6.
• Lift Axle Sensing: If a trailer is equipped with a lift axle,
then lift axle sensing must be used, unless configured
for automatic lift axle control (see below). A pressure
threshold switch must be installed in the lift bag for the
lift axle and connected to the ECU. The ECU can then
monitor the position of the lift axle and will compensate
correctly for the load transfer to the other axle(s) when
the lift axle is raised.
• Lift Axle Control: The Bendix ® TABS‑6 ™ Adv can be
configured to automatically raise (and lower) lift axle(s)
when a pre-configured load is sensed.
• Load Sensor: If a trailer is equipped with an external
electrical spring deflection sensor, See Figure 3, a
linkage is attached to an axle (but must not be installed
on a lift axle) — within 5 (five) inches of the center of
the axle — connects to a load sensor attached to the
chassis of the vehicle. The output from the sensor is
an electrical signal that is proportional to the spring
deflection. The connection to the Electronic Control
Unit (ECU) is via an auxiliary sub-harness (part of the
power harness). See Figure 6.
FIGURE 6 ‑ exAmpleS of pigTAil wire hArneSSeS
To ECU To WS-24 ™ Wheel
Speed Sensor
Wheel Speed Sensor
Extension Harness
Pigtail Harness
6-pin Auxiliary
(Optional)
18-Pin ECU Connector
18-Pin ECU Connector
18-Pin ECU Connector
4-Pin SAE J1939 CAN
(Optional)
4-Pin SAE J1939 CAN
(Optional)
4-Pin SAE J1939 CAN
5-Pin Power and
Indicator
Lamp (POWER/WL)
5-Pin Power and
Indicator
Lamp (POWER/WL)
5-Pin Power and
Indicator
Lamp (POWER/WL)