Manual

Fuel Pressure Gauge
For Product Numbers: MT-DV11, MT-DV11_30, MT-WDV11, MT-
WDV11_30
Wire Harness Color Code
Red:
12v Constant (un-switched) Source (+)
Orange:
12v Dimmer (switched) Source (+) (optional)
White:
12v Ignition (switched) Source (+)
Black:
Vehicle / Engine Ground (-)
1. Disconnect the negative battery cable.
2. Install and connect the 1/8
th
NPT fuel pressure sender unit to your
vehicle’s fuel system.
 This gauge and sensor are not recommended for use on
vehicles with returnless fuel systems.
 Install the sensor to either your lift pump or to your fuel filter
housing. With all Dodge Diesel Trucks we require installing a
fuel pressure regulator, known as a snubber valve. This
eliminates harmful fuel pressure spikes that may result in the
failure of the fuel pressure sensor. This can be purchase at
www.MaxTow.com or from an authorize dealer.
Note: Some vehicles may require additional adapters to complete the
installation of this sensor.
3. Route the pressure sensor wire harness (slot #2) from the back of
the gauge to the location of the sensor. Next, couple and secure the
sensor wire harness to the pressure sensor.
 Be sure to use a grommet when routing wires through the
firewall to protect them from stripping and damage.
4. Connect the white wire to a positive 12 volt ignition (switched)
source. It may be connected to the fuse panel, an accessory wire, or any
positive 12 volt source that turns on and off with the ignition switch of
the vehicle.
5. Connect the red wire to a positive 12 volt constant (un-switched) source,
either directly to the battery or to a fuse panel on the vehicle.
 If wiring to an un-fused source, install a 3 amp fuse inline within
20 inches of the sources connection. You may obtain an optional
“expandable circuit” accessory. This component easily fits into
your fuse panel and provides an additional fused power wire for
accessories such as gauges. This is available at
www.MaxTow.com or a local auto parts store.
6. The Night Time Dimming feature decreases the brightness of the gauge
face by 30%. Connect the orange wire to the 12 volt positive headlamp
source. This allows the mode to be activated when the headlights come on.
This step is optional and will not affect operation of the gauge if it is
omitted. NOTE: Do not connect the orange wire to a dimmer wheel.
This will cause the gauge lighting to flicker.
7. Connect the black wire from the gauge, to any good (unpainted) ground
connection. You may also route a wire directly to the negative side of the
vehicle’s battery.
8. Reconnect the negative battery cable.