Innovate Motorsports MTX-D, Oil Temperature/Pressure Gauge - Manual (Page 4)

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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, and fuel pump
are not recommended.
2. Connect the main BLACK wire to a ground source. Note that there are other black wires
coming out of the 2 pin and 3 pin connectors, these are not the main gauge grounds. 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 Oil Temp Sensor Wiring
1
Fish the Oil temp sensor’s two pin connector through the firewall and to the MTX Oil
Temperature/Pressure Gauge.
2 Connect the sensor’s male two pin connector to the female two pin connector on the gauge.
3 Coming out of the female two 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.
2.3 Oil Pressure Sensor Wiring
1. Connect the Red wire with the ring terminal to the Signal (S) terminal on the oil pressure
sensor and secure it with the thumb nut.
2. Connect the Black wire with the ring terminal to the Ground (W.L./G) terminal on the oil
pressure sensor and secure it with the thumb nut.
3. Fish the Oil pressure sensor’s three pin connector through the firewall, to the MTX Oil
Temperature/Pressure Gauge.
4. Connect the sensor’s male three pin connector to the female three pin connector on the
gauge.
5. 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 Programming the Gauge (LM Programmer)
The MTX Oil Temperature/Pressure gauge is programmable with the following functionality:
1. Change the display unit of measure from Imperial to Metric
2. Setup needle ranges and warnings
3. Upgrade the firmware
Avoid connecting or disconnecting any of the ports labeled IN or OUT while
the unit is powered ON.