3
2
Wiring
2.1
Main Gauge Wiring
1. Connect the RED wire to a switched 12V source. A switched 12V source
comes ON as soon as the ignition on the car is keyed on. Make sure the
connection is fused with a minimum fuse size of 2A.
Circuits that share power with the vehicle’s stereo, ignition
system, ECU or fuel pump should not be used.
2. Connect the main BLACK wire to a ground source. Note that there is an
additional black wire coming out of the 3 pin connector, this is not the
main gauge ground and will be covered later in the Fuel Pressure sensor
wiring. Avoid noisy ground sources, such as grounds used for the radio
and or ignition.
3. Connect the WHITE wire to a headlight power wire (a wire that supplies
current when the headlights are on). This enables the display to dim for
better nighttime viewing. DO NOT CONNECT THIS WIRE TO THE
HEADLIGHT DIMMING WIRE. Connection to this rheostat type of switch
will cause the gauge to malfunction. If you chose not to utilize the
dimming feature, connect the WHITE wire to ground.
2.2
Fuel Pressure Sensor Wiring
1. Route the pressure sensor cable to the gauge and connect it to the 3
pin connector.
2. Coming out of the female three pin connector from the gauge you
will find a black wire with a stripped end. Connect this black wire to
the same ground source as the gauge.
3. Connect the other end of the pressure sensor cable to the fuel
pressure transducer.
