Manual # 650337
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
Terminal not used on
MCL-3K-VLT
+12V
KEY ON POWER
+12V
KEY ON POWER
Optional toggle
switch
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 a MCL-3K Tachometer, it will actually serve as the di
mming “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
GAUGE SETUP
The volt gauge setup only has options for setting a low voltage and high voltage warning point,
and setup may be skipped if you are happy with the default settings. The default settings are:
Lo warn
11.1 V (adjustable range 9.6-12.6)
Hi warn
15.4 V (adjustable range 13.9-16.9)
The GREEN switch input wire, in the two pin connector, is used to enter setup. If you are only
installing one or a couple Dakota Digital MCL-3K gauges set up may seem a little strange since they are
designed to work as a set, however
you’ll simply cycle through a few screens to get to the desired gauge.
The table below shows what will be on the gauge with each button press, or tapping the GREEN wire
high +12V.
Speed
Tach
Oil psi Oil temp
Fuel
Volt
1
st
2
nd
3
rd
4
th
5
th
6
th
7
th
8
th
Connection shown with
optional spade terminals
