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MAN# 650814
wires, or a solid state sensor. Only ground the speed sensor here. If you are using a single
wire output from a computer for the VSS then this terminal should be left open.
TEMP INPUT - SIG
•
The water temperature sensor included with this system must be used. Other sensors
will cause incorrect readings or damage to the Control Box. If using a BIM-01-x module
to obtain engine temperature then this terminal will not be connected.
•
The supplied sensor, Dakota Digital
SEN-04-5
, is a 100-300ºF(40-150ºC) temp sensor. The
sensor mounts on the engine block or into the intake manifold so that the end of the sensor is
in the engine coolant flow.
It has 1/8” NPT threads; adaptor bushings may be used to adapt it
for various applications.
•
The water temp sensor has two wires coming from the harness. One wire will connect to the
SIG terminal; the other wire will connect to the GND terminal. It does not matter which wire
goes into either location.
•
Due to the construction of the sensor, readings at temperatures below 100ºF will be
inaccurate. The sensor is designed to be accurate from approximately 100ºF - 300ºF.
•
If the water temperature rises above an adjustable warning point, a red warning light will turn
on and the digital reading will be shown on the TFT display. The default warning point is
250ºF.
If “WATER SHORTED” is shown this indicates that the Control Box is sensing a short
to ground or out-of-range error from the sensor or sensor wire.
If “WATER OPEN” is shown
this indicates that the Control Box is sensing an open circuit or out-of-range error from the
sensor. If either indication remains on the display, inspect the sensor wire for damage, check
the routing of the sensor wire, and check that the correct sensor is connected.
TEMP INPUT - GND
•
This is the ground reference used for two-wire water temp sensors. This will connect to one of
the wires from the Dakota Digital
SEN-04-5
. The other wire will connect to the SIG terminal,
and it doesn’t matter which wire goes into either location.
PRESSURE INPUT - PWR
•
This terminal is used to supply power to Dakota Digital pressure sensor
SEN-03-10
. This
supplies 5V DC to the sensor and should not be connected to anything else. Connect the red
wire from the
SEN-03-10
to this terminal.
***DO NOT use this terminal to power any other devices; it is a low c5V output.
PRESSURE INPUT - SIG
Note: A Dakota Digital oil pressure sensor must be used. Other sensors will cause
incorrect readings and/or can cause damage to the Control Box. The standard sensor
provided with the GRFX system is a 0-150 psi sensor (Dakota Digital SEN-03-10). Other
sensors are also available if required: a 0-300 psi sensor (SEN-03-9), and a 0-100 psi
sensor (SEN-03-8) are also supported. If using a BIM-01-x to obtain engine oil pressure
then this terminal will not be connected.
•
The supplied sensor, Dakota Digital
SEN-03-150
, is a 0-150 psi solid state pressure sensor.
The sensor can mount on the engine block or in an oil pressure line off of the block. The
sensor
has 1/8” NPT threads. Adaptor bushings may be used to adapt it for various
applications.
•
The oil pressure sensor has four wires coming from the harness, which includes a bare shield
drain wire. The WHITE wire will connect to the SIG terminal, the RED to PWR (5V DC), the
BLACK to GND, and bare shield wire to DRN. Do not route the oil sensor wire alongside a
spark plug wire or other high current or high voltage wires. Doing so can cause incorrect or
erratic gauge readings.
•
If the oil pressure drops below an adjustable warning point a red warning light will turn on and
the digital reading will be shown on the TFT display. The default warning point is 10 psi. If
“OIL FAIL LOW” is shown this indicates that the Control Box is sensing a short to ground or
