4
5
To ECU
To Ground
To 12V Battery Power
FUSE
85
87
86
30
RELA Y
FUSE
IGNITION
SWIT CH
+
DTM-4 Power Supply Cable
Spare CAN port can be
used to daisy chain other
Haltech CAN devices.
(iC-7, TCA, TMS, etc)
Wideband
Sensor
2
(WB2 only)
Wideband
Sensor
1
73mm
WB MOUNTING
WB WIRING / DAISY CHAIN SETUP
Wiring
Connect the controller to the Haltech CAN Bus on your
ECU by the integrated DTM-4 connector on your device.
Connect the NTK or Bosch LSU 4.9 Sensor(s) via the
available pre-terminated cables from the controller.
Note: Haltech Wideband Controllers draw up to 4A per
sensor during cold startup.
Mounting
The Haltech Wideband Controller can be mounted to a
flat surface in the engine bay using the two mounting
holes provided in the enclosure.
The controller should be located as far as possible from
any extreme sources of heat (exhaust, turbocharger,
etc.)
Although the Haltech WB1 / WB2 Controllers are
sealed units, it is good practice to mount them in an
orientation that prevents water from collecting on the
connector(s).
Typical wiring when using multiple WB controllers.
When running multiple controllers in a “daisy chain”,
they can require more power than the CAN Bus circuit
delivers.
It is required to run a fused and switched 12V source
(supplied by a relay) to power these controllers at Key
On and Key Start positions.
