AEM Digital Oil Fuel Pressure Gauge 304401 User Manual

							
  
 
 
ADVANCED ENGINE MANAGEMENT INC. 
This product is legal in Californi a for racing vehicles only and should never be used on public highways. 
Advanced Engine Management, 2205 126
th Street Unit A Hawthorne, CA. 90250, Phone: (310) 484-2322 Fax: (310) 484-0152 
Instruction Part Number: 10-4401, ©  2006 Advanced Engine Management, Inc. 
 
30-4401 FLUID PRESSURE GAUGE QUICK START GUIDE 
 
 
DIGITAL DISPLAY GAUGE 
 
The AEM Digital Display Gauges are designed for easy insta llation and usability.  The 30-4401 Fluid Pressure Gauge kit 
comes with all the necessary components to install and use the  gauge.  Follow the instructions printed in this quick start 
sheet to install your gauge and start using it as soon as possi ble.  Visit the “AEM Gauges” section of the AEM electronics 
forum for more information on the advanced features of this  gauge.  The forums can be accessed by clicking on the 
“FORUMS” link on the AEM home page, www.aempower.com.   
  
The  30-4401  Kit Contains: 
(1) Pressure Gauge assembly 
(1) Pressure Sensor 
(1) Pressure Cable 
(4) Butt Connector 
(1) Silver Bezel 
(1) White Oil Pressure Faceplate 
(1) Black Fuel Pressure Faceplate 
(1) White Fuel Pressure Faceplate 
(1) Instructions 
Gauge Configuration:   The gauge bezels are threaded on to the 
gauge cup.  Rotate the bezel in a counter-clockwise direction to 
remove it from the cup.  Once removed, the faceplate can be 
changed and/or a different bezel can be installed.  
 
Electrical Connection:  In order to use the gauge, only the red and 
black wires need to be connected.  The white and blue wires do not 
need to be connected.  Connect the red wire to switched +12V.  
Connect the black wire to a known good ground.  Plug the connector 
on the harness into the mating co nnector on the sensor.  See the 
connection diagram below.   
 
Sensor Installation:   The AEM pressure sensor has 1/8”NPT external thr eads.  Install the sensor into a bung with mating 
threads.   
 
Troubleshooting:  The gauge may show readings of a number greater t han “0” or “---“ if the gauge is powered up shortly 
after inserting the sensor connector. This is due to temporar y pressure buildup in the connector cavity when the connector 
is inserted.  The connection between the harness and sensor  is water resistant, yet non-hermetic, allowing pressure to 
bleed off.  Due to normal manufacturing va riances, bleed-off times will vary, but are usually less than 5 minutes after the 
connector has been inserted. 
 
Pressure Sender 
Ground (Black) 
Switched +12V (Red) 
RS232 (Blue) 
0-5V Output (White) 
 Figure 1. Connection Diagram  
						

							
 
 
 
 
AEM Electronics Warranty 
  
Advanced Engine Management Inc. warrants to the consumer that all AEM Electronics products will 
be free from defects in material and workmanship fo r a period of twelve months from date of the 
original purchase. Products that fail within this  12-month warranty period will be repaired or replaced 
when determined by AEM that the pr oduct 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 pric e 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 br each of any written or implied warranty on all 
products manufactured by AEM. Warranty return s 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 dat e the RMA is issued. 
  
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 tech line at 1-800-423-0046 to di scuss the problem.  Most issues 
can be resolved over the phone.  Under no circum stances should a system be returned or a RMA 
requested before the abov e process transpires. 
  
AEM will not be responsible for electronic products t hat are installed incorrectly, installed in a non 
approved application, misus ed, 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 authorizati on before repairs are made to the product.