AEM Analog Oil Transmission Water Temperature SAE Gauge 305140 User Manual

 
 
 
 
AEM Performance Electronics 2205 126th Street Unit A, Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aemelectronics.com Instruction Part Number: 10-5140 Rev 01  2010 AEM Performance Electronics 
 
Part Number 30-5140  
Analog Style 100°F - 300°F Oil/Coolant/Trans Temperature Gauge 
NOTE: Faceplate Configuration Instructions Included on Separate Sheet 
 
Figure 1.  Wiring Schematic 
AEM Oil/Coolant/Trans Temperature Gauge Parts 
1 x 35-5140 Temperature Gauge Assembly...

Page 2 
INSTALLATION 
 
1. Disconnect the negative battery cable. 
2. Secure the gauge in a 2 1/16th” (52MM) mounting hole with the supplied bracket. 
3. Plug the 8-wire power harness into the mating connector on the back of the 
gauge and connect the wires as shown in Figure 1.  Note: the locating tabs on 
the side of the connector should be nearest the center of the gauge. 
4. Thread the sensor into a suitable temperature port that has 1/8” NPT female 
threads.  Note: a small amount of thread sealant...

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Changing the Bezel and Faceplate 
 
The gauge kit comes with the black bezel and black faceplate installed.  However, the 
kit also comes with a silver bezel and multiple faceplates.  Instructions on how to 
change the faceplate are included in the kit on a separate sheet of paper.  To change 
the bezel, orient the gauge so you are looking at the faceplate.  Rotate the bezel 
counter-clockwise to unscrew it from the gauge cup.  The bezel, lens, and rubber 
spacer are all removable.  Reassemble...

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Status Lights 
 
The AEM Temperature gauge has two status lights, see Figure 4.  The status light on 
the left will turn on solid if the temperature is less than 100°F (40°C).  The status light on 
the right will flash if the temperature exceeds 300°F (148°C).   Both status lights will 
flash if the sensor is disconnected.  The needle will point straight downward if the 
temperature exceeds 300°F (148°C) or the sensor is disconnected.  See Table 1 for a 
description of the conditions....

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Analog Output 
 
The analog output from the AEM Temperature gauge is a linear dc voltage signal that 
varies from 0.5 Vdc at 100°F (40°C) to 4.5 Vdc at 300°F (148°C) over the operating 
range of the gauge.  The signal is used for sending information to a data logger or an 
engine management system like the AEM EMS or F/IC.  The transfer function for 
temperature in degrees Fahrenheit is listed below. 
 
Temperature (Fahrenheit) = 50 x Voltage + 75  
 
The transfer function for temperature in...

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Specifications 
 
Gauge 
Supply Current 0.1 A  
Differential Analog Outputs 1 
Measuring Range 100°F - 300°F 
40°C - 148°C 
Operating Voltage (nominal) 8.5-15 volts dc 
Harness & Connector Temp Limit: 105C 
 
Notes 
 
The sensor is a precision pressure measuring device and should not be subject to 
mechanical or thermal shock or it may be damaged.  
 
If  further  tuning  help  is  needed  be  sure  to  visit  the  video  gallery  or  performance 
electronics  forum  at www.aemelectronics.com for...