Dakota Digital MCL-3000 - Manual (Page 3)

Manual # 650339
Back View of Gauge
Dim Input (active high +12V)
BLUE wire
Switch Input (active high +12V)
GREEN wire
Optional momentary
push button switch
Connect to main
chassis ground
+12V
KEY ON POWER
Sender Terminal
+12V
KEY ON POWER
+12V
KEY ON POWER
Optional toggle
switch
TEMP SENSOR
(supplied)
RED wire
BLACK wire
If you are installing multiple MCL-3K gauges, you can tie the GREEN wires together and then to
one switch. The same is true for the BLUE wire, wire all of them to one switch.
If you have an MCL-3K Tachometer, it will actually serve as the dimming “switch”. The BLUE
wire on any of the MCL-3K Tachs will provide a +12V output for the dimming function. The gauge has a
light sensor behind the lens and when the ambient light is dim or low it will “turn on” the output and
supply +12V to the BLUE wire. You will not need to wire in a toggle switch if you have an MCL-3K
tachometer and choose to wire it this way.
Back View of Gauges
Dim Input (active high +12V)
BLUE wire
Switch Input (active high +12V)
GREEN wire
Optional momentary
push button switch
+12V
KEY ON POWER
+12V
KEY ON POWER
Optional toggle
switch
Continue wiring to other
MCL-3K gauges
OIL TEMPERATURE SENSOR INSTALLATION
To complete the wiring the new temp sensor must be installed. Since this kit can work on 96 – up
models, an adaptor bushing and O-ring are supplied for older Evolution style engines. Follow the steps
below for your application.
Evolution Engines
The supplied temp sensor will need to be used with the included brass adaptor bushing(1/2”
straight to 3/8 NPT). You will need to use the supplied adaptor and install it in place of the oil
drain plug. The new adaptor and sensor will now be the drain plug and will have to be unplugged
and removed for oil changes. The factory O-ring is used to seal the adaptor to the pan and
should be replaced at each oil change. First install the new O-ring, and thread the sensor into the
adaptor. Once the sensor is tight it should be about flush with the end of the adaptor bushing,
see photos next page.
Connection shown with
optional spade terminals