Instruction

Manual
P/N 30-0307
X-SERIES GAUGE
OIL PRESSURE 150PSI / 10BAR
STOP! - READ THIS BEFORE INSTALL OR USE!
WARNING:
THIS INSTALLATION REQUIRES WELDING AND INTEGRATION INTO A VEHICLE'S ELECTRICAL SYSTEM. DAMAGE TO
SENSITIVE ELECTRONICS, FIRE, OR EXPLOSION MAY OCCUR IF PROPER PRECAUTION IS NOT TAKEN. IF THERE IS
ANY DOUBT, DO NOT ATTEMPT THE INSTALLATION AND CONSULT A PROFESSIONAL.
NOTE: IT IS THE RESPONSIBILITY OF THE ENGINE TUNER TO ULTIMATELY CONFIRM THE CALIBRATION USE FOR
ANY PARTICULAR ENGINE IS SAFE FOR ITS INTENDED USE. AEM HOLDS NO RESPONSIBILITY FOR ANY ENGINE
DAMAGE THAT RESULTS FROM THE MISUSE OF THIS PRODUCT.

The 52mm (2-1/16”) AEM X-Series Gauge features a four digit central readout and sweeping 24-color-coded LED display,
providing immediate reference to the sensor reading in real-time. A 0-5V analog and an AEMnet (CAN bus) output is
included and can be used with data loggers or aftermarket ECUs including the AEM Infinity Engine Management System
(EMS).

Features KIT CONTENTS

PN Description
· 2-1/16" / 52mm outer diameter mounting
10-0307 INST, X-SERIES OIL PRESSURE GAUGE 0 TO 150PSI / 0 TO
· Flashing warn / alarm feature 10BAR
· Peak recall 35-0307 GAUGE ASSY, X-SERIES OIL PRESSURE GAUGE 0 TO 150PSI / 0
· US or metric / SI display modes with reversible TO 10BAR
faceplate 35-4302 RED INSULATED BUTT CONNECTORS (6)
· Black bezel / "Oil" faceplate supplied; Silver / white 35-8618 NUT, KNURLED, M4x0.7 (2)
available as optional purchase
35-8614 BRACKET, X-SERIES GAUGE
· Locking connectors
· Supports vehicle / system voltages up to 16V 35-8617 RUBBER BAND, X-SERIES GAUGE
· Auto-dimming display 35-3434 CABLE, X-SERIES GAUGE PWR/IO PRS
· 0-5V analog output 35-2131- SENSOR, 150 PSIG BRASS
· AEMnet (CAN bus) output 150

*OPTIONAL* ACCESSORIES
PN Description
30-0307- BEZEL, X-SERIES GAUGE SILVER
ACC FACEPLATE, X-SERIES OIL 150PSI WHITE

AEM Performance Electronics, 2205 126th Street Unit A, Hawthorne, CA 90250 - Phone: (310) 484-2322
http://www.aemelectronics.com
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Wiring Installation Diagram

Connector A - Power / IO
Pin Color Description
1 RED Switched 12V Power (5A Fuse)
2 BLACK Power Ground
3 GREEN/BLACK AEMnet- / CANL
4 WHITE/BLACK AEMnet+ / CANH
5 NC NC
6 RED Sensor 5V
7 GREEN Sensor Signal Input
8 BLACK Sensor Ground
9 WHITE 0-5V Analog Output Positive+
10 BROWN 0-5V Analog Output Negative-

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Operation
The inner numeric LEDs and outer ring LEDs display the currently measured sensor reading; the inner numeric LEDs will
flash when the sensor reading exceeds the (configurable) warn/alarm threshold value. WARN and PEAK buttons are
located on the face of the gauge and are used to perform the following functions.

Display or adjust warn/alarm threshold

§ Press the WARN button; the warn/alarm threshold will be displayed
and the outer LEDs will flash
§ Use either the WARN or PEAK buttons to decrement or increment
the threshold value
§ Depress and hold both the WARN and PEAK buttons until LESS or
GrTr appears
§ Press the WARN button to toggle between LESS and GrTr modes
Warn/alarm activated when sensor reading is less
than threshold value
Warn/alarm activated when sensor reading is greater
than threshold value
§ The gauge will return to normal display mode a few seconds after
the last button press
Display or clear stored peak value
§ Press the PEAK button; the peak (highest) sensor reading will be
displayed and the outer LEDs will flash
Change display units US / SI (metric)
§ The peak value will be retained across power cycles
§ The gauge should be in its normal display
§ While the peak value is being displayed, depress and hold the
mode, showing the current sensor reading
PEAK button for three seconds until "CLr" appears to clear the
§ Depress and hold the WARN button for three
peak value
seconds until US or SI appears
Will be displayed to confirm the peak value has been
§ Press the WARN button to toggle between
reset
US or SI (metric) modes
§ The gauge will return to normal display mode shortly after the last
English / US units mode button press
Metric / SI units mode
§ The gauge will return to normal display mode
a few seconds after the last button press
§ Note the faceplate is a reversible two-sided
design with an alternate scaling on the back
§ Reference the Faceplate/Bezel Installation
section in this manual for instruction on how
to reverse the faceplate

Sensor Installation
§ Install sensor with a liquid thread sealant suitable for NPT fittings.
§ Remote mounting pressure sensors using flexible tubing and anti-vibration mounts will help extend sensor life.
§ Secure wiring to vehicle with wire ties paying special attention to the sensor harness routing beneath the vehicle and/
or in the engine compartment.
§ Take care when routing the sensor harness near hot exhaust components, use strain reliefs and wire coverings as
appropriate.
§ Use a 5A inline fuse on the switched 12V power supply line (Pin 1 - Power/IO).

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Faceplate / Bezel Installation

The gauge kit is supplied assembled with a black faceplate and black bezel. An accessory kit is available (for purchase
through AEM dealers) which includes an optional silver bezel and white faceplate. Please reference the Optional
Accessories section earlier in the document for the appropriate part numbers. Contact your dealer or visit
www.aemelectronics.com for more information.

The faceplate is reversible, displaying alternative scalings on either side. Reference the Operation section of this manual
for details on how to switch the display mode when reversing the faceplate. Disassembly is required to change the
faceplate, flip/reverse the faceplate, or change the bezel of the gauge. The following diagram will provide familiarization
with the major components of the gauge prior to beginning the procedure.

Item Qty Description

1 1 Lens
2 1 Bezel
3 1 Faceplate
4 1 Diffuser
5 1 Light Guide
6 2 Button
7 2 Mounting Stud (M4 x 0.7)
8 3 Assembly Screw
9 1 Mounting Bracket
10 2 Brass Thumb Screw (M4 x 0.7)
11 1 Printed Circuit Board (PCB)

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Gauge Disassembly

STEP 1 - Remove the three assembly screws (8) using a #1 Phillips

head screwdriver. Separate the bezel (2) and cup (7) from the rest of the
STEP 2 - Separate the PCB (11) from the remaining components
assembly. If you have purchased the optional accessory kit, the silver
bezel may be replaced for the existing bezel at this time

STEP 4 - As you separate the remaining components, diffuser (4),

STEP 3 - Slide the light guide (5) upward to remove it, the buttons may faceplate (3), lens (1), note the order in which they were assembled.
fall out at this time - take care not to lose them The faceplate (3) may now be reversed to display an alternate scaling or
replaced for a different color as included in the optional accessory kit

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Gauge Assembly

STEP 1 - Place the light guide (5) on a flat surface (black side up) and STEP 2 - Stack the diffuser (4), faceplate (3), and lens (1) in order, over
slide the buttons (6) into the slots the buttons, and on to the light guide

STEP 3 - Reassemble the PCB and display stack with the bezel, making STEP 4 - Reassemble and tighten screws to 2 in-lb (previously
sure screw holes are aligned through the entire assembly assembled bezel) or 3 in-lb (new bezel). Do not over-tighten!

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Gauge Installation

Installation using supplied bracket Installation w ithout bracket, using rubber band

A 2-1/6" (52mm) hole is required to mount the X-Series gauge. A bracket and thumbscrews are provided to facilitate
installation into a panel or gauge pod. In some cases, the gauge cup may be pushed into a mounting hole causing an
interference fit strong enough to retain the gauge; the supplied rubber band may be fit to the gauge to create a tighter fit in
mounting holes slightly larger than 52mm. It is, however, recommended that gauges be mounted securely using the
supplied bracket to ensure they never become loose and cause a hazard during vehicle operation.

Note: The gauge is not water-proof and should not be installed in a location with exposure to water or snow. Damage
caused by water ingress will not be covered under warranty.

0-5V Analog Output

WHITE WIRE = Analog Positive +
BROWN WIRE = Analog Negative - 0-5V Analog Output Scaling Table
Volts psig bar
<0.50 SENSOR ERROR
0-5V Analog Output Scaling Formulas 0.50 0.0 0.0
psig = (37.50 * Volts) -18.75 0.75 9.4 0.6
bar = (2.59 * Volts) - 1.29 1.00 18.8 1.3
1.25 28.1 1.9
1.50 37.5 2.6
The 0-5V analog output is suitable for output to devices such 1.75 46.9 3.2
as loggers or ECUs. This differential output requires special 2.00 56.3 3.9
care to ensure proper operation. The WHITE signal wire 2.25 65.6 4.5
should be connected to the positive of the analog input of the 2.50 75.0 5.2
logging device or ECU; the BROWN wire must be connected 2.75 84.4 5.8
to the negative of the analog input of the logging device or 3.00 93.8 6.5
ECU. If the logging device or ECU does not have a 3.25 103.1 7.1
differential analog input (both a dedicated positive and 3.50 112.5 7.8
negative terminal for the analog input) then connect the 3.75 121.9 8.4
BROWN wire to the shared signal ground. If the device does 4.00 131.3 9.0
not have a dedicated signal ground then as a last course of 4.25 140.6 9.7
action, connect it to the power ground of the logging device. 4.50 150.0 10.3
>4.50 SENSOR ERROR
Important Note: If bench testing the analog output outside
of a vehicle, a multimeter's positive lead may be connected
to the WHITE wire however the BROWN wire must be
connected to BOTH the multimeter's negative lead AND
power ground going to the X-Series device. This connection
is usually made by the circuitry inside an ECU or data
logger.

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AEMnet (CAN bus) Output

WHITE WIRE WITH BLACK STRIPE = AEMnet+ / CANH
GREEN WIRE WITH BLACK STRIPE = AEMnet- / CANL

The AEMnet output is suitable for output to AEM devices such as the AQ-1 data logger or Infinity ECU. The following
CAN configuration and message definition information is provided below to facilitate interface with third-party devices.

Bus Termination bit rate 500 kb/sec

All AEMnet/CAN networks must be terminated to have an format 29 bit ID
equivalent of approximately 60 Ohms of resistance.
Generally, this means a 120 Ohm resistor connected in transmit rate 20 hz
parallel to AEMnet+/AEMnet- (or CANH/CANL) at both terminating resistor none
physical ends of the bus run. The X-Series device does not endianness big / Motorola
have any internal termination and is intended to be DLC 8
connected to a pre-existing, properly terminated network.
Please refer to the Bosch CAN2.0B specification for further
detail.

Message ID 0x000A0307

Byte Bit Bitmask Label Data Type Scaling Offset Range

0 Pressure (gauge) 16 bit unsigned 0.01 bar/bit 0 0 to 655.35 bar
1-7 - - - - - - -

FAQ / Troubleshooting
What are the minimum wiring connections needed to use the gauge?
Switched/fused 12V (RED) and power ground (BLACK) must be supplied to the 10 pin connector A and the sensor must
be plugged into the harness. Any unused wires may be secured and fastened away for future use.

I installed my gauge correctly and the display just shows, "SEnS"

"SEnS" means that the gauge cannot read a valid signal from the sensor. Please ensure that the sensor is plugged in
and that the wiring between the sensor and gauge is not damaged.

Can I extend the wires in my sensor harness?

Yes, but match the existing wire gauge use of proper crimping/soldering techniques is required.
For support, contact AEM Technical Support at 1-800-423-0046 or gentech@aemelectronics.com.

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Specifications
Dimensions diameter (bezel) 2.40 / 61 in / mm
diameter (cup) 2-1/16 / 52 in / mm
depth (incl. bezel) 0.825 / 21 in / mm
depth (cup only) 0.200 / 5 in / mm
Sensor Installation past finger tight 1.5 - 3.0 turns
use liquid sealant
Supply Voltage min 7 VDC
max 18 VDC
Supply Current (13.8V) nominal 50.0 mA
Operating Temperature min -4 / -20 degF / degC
max (16V Supply) 185 / 85 degF / degC
Analog Output resolution 10 bit
update rate 500 hz
CAN 2.0B Output bit rate 500 kb/sec
format 29 bit ID
transmit rate 20 hz
terminating resistor none
endianness big / Motorola
DLC 8

12 Month Limited Warranty

Advanced Engine Management Inc. warrants to the consumer that all AEM High Performance products will be free from
defects in material and workmanship for a period of twelve (12) months from date of the original purchase. Products that
fail within this 12-month warranty period will be repaired or replaced at AEM’s option, when determined by AEM that the
product failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of the AEM
part. In no event shall this warranty exceed the original purchase price of the AEM part nor shall AEM be responsible for
special, incidental or consequential damages or cost incurred due to the failure of this product. Warranty claims to AEM
must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original
purchaser of product and is non-transferable. All implied warranties shall be limited in duration to the said 12-month
warranty period. Improper use or installation, accident, abuse, unauthorized repairs or alterations voids this warranty. AEM
disclaims any liability for consequential damages due to breach of any written or implied warranty on all products
manufactured by AEM. Warranty returns will only be accepted by AEM when accompanied by a valid Return Merchandise
Authorization (RMA) number. Product must be received by AEM within 30 days of the date the RMA is issued.

UEGO oxygen sensors are considered wear items and are not covered under warranty.

Please note that before AEM can issue an RMA for any electronic product, it is first necessary for the installer or end user
to contact the EMS tech line at 1-800-423-0046 to discuss the problem. Most issues can be resolved over the phone.
Under no circumstances should a system be returned or a RMA requested before the above process transpires.

AEM will not be responsible for electronic products that are installed incorrectly, installed in a non-approved application,
misused, or tampered with.

Any AEM electronics product can be returned for repair if it is out of the warranty period. There is a minimum charge of
$50.00 for inspection and diagnosis of AEM electronic parts. Parts used in the repair of AEM electronic components will
be extra. AEM will provide an estimate of repairs and receive written or electronic authorization before repairs are made to
the product.

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