MAN #650387C
STA-1000
Speed/Tach Interface Module for OBD-II vehicle interface
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www.dakotadigital.com
605-332-6513
STA-1000
OBDII INTERFACE
setup/status switch
Connect to main
chassis ground
+12V
KEY ON POWER
(fused 5 - 20 AMP max)
Standard 0-12V tachometer output.
High voltage tachometer output.
to engine lamp
keyed power
bulb
AC speedometer output.
Standard speedometer output.
Optional
cruise control
connections.
Cruise Control 4k ppm output.
Vehicle speed signal from transmission.
OBD-II
Connect to vehicle
diagnostic port
This unit has an input to read engine information from vehicles using the GM 1996-up OBD-II protocol, Ford 1996-up
OBD-II protocol, some Chrysler 2000-up OBD-II protocol, or CAN OBD-II protocol. CAN OBD-II is used on all vehicles
2008 and newer and some vehicles from 2004 – 2008. It provides speedometer, tachometer, and engine indicator
outputs. Do not mount this in the module in the engine compartment; it should be mounted in interior of the vehicle.
Operation
The RPM and speed can be provided by this unit instead of trying to find a compatible connection somewhere in the
vehicle wiring harness. These outputs can be calibrated to match the gauge being connected.
The malfunction indicator lamp (MIL) or service engine soon indicator will be activated from the data bus when there is
an engine code set. This will not turn on the indicator for a lamp test function when the key is on, but the engine is not
running.
Since a cruise control will typically not work well with the speed data from the diagnostic bus, a connection is provided
to connect a VSS signal directly from the transmission and then provide a calibrated 4000 ppm output. The output is
self calibrated by reading the incoming transmission VSS signal and comparing it with the speed data from the
diagnostic bus.
