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Revised:  March 9, 2020 

Page 6 

 

  Press and hold the calibration button with the LED indicating 

g

 until the 

g

 starts alternating with 

E

.  

The gauge 

empty

 indication will now be set. 

  Press and hold the calibration button to change the fuel gauge’s pointer position.  The first time the 

button is pressed and held, the fuel level shown on the gauge will decrease (

or in some cases 

increase

).  The next time the button is pressed and held, the fuel level shown on the gauge will 

change in the opposite direction.  The direction the fuel level indicator changes will alternate between 
increasing and decreasing every time it is pressed and held. 

  Once the fuel gauge is indicating 

empty

, wait 8 seconds without pushing the calibration button to 

save the calibration.  The LED display will change back to 

g

 to confirm calibration is saved. 

  Press and hold the calibration button with the LED indicating 

g

 until the 

g

 starts alternating with 

2

.  

The gauge 

1/4

 tank indication will now be set. 

  Press and hold the calibration button to change the fuel gauge’s pointer position.  The first time the 

button is pressed and held, the fuel level shown on the gauge will decrease (

or in some cases 

increase

).  The next time the button is pressed and held, the fuel level shown on the gauge will 

change in the opposite direction.  The direction the fuel level indicator changes will alternate between 
increasing and decreasing every time it is pressed and held. 

  Once the fuel gauge is indicating 

1/4

, wait 8 seconds without pushing the calibration button to save 

the calibration.  The LED display will change back to 

g

 to confirm calibration is saved. 

  Press and hold the calibration button with the LED indicating 

g

 until the 

g

 starts alternating with 

5

.  

The gauge 

1/2 

tank indication will now be set. 

  Press and hold the calibration button to change the fuel gauge’s pointer position.  The first time the 

button is pressed and held, the fuel level shown on the gauge will decrease (

or in some cases 

increase

).  The next time the button is pressed and held, the fuel level shown on the gauge will 

change in the opposite direction.  The direction the fuel level indicator changes will alternate between 
increasing and decreasing every time it is pressed and held. 

  Once the fuel gauge is indicating 

1/2,

 wait 8 seconds without pushing the calibration button to save 

the calibration.  The LED display will change back to 

g

 to confirm calibration is saved. 

  Press and hold the calibration button with the LED indicating 

g

 until the 

g

 starts alternating with 

7

.  

The gauge 

3/4

 tank indication will now be set. 

  Press and hold the calibration button to change the fuel gauge’s pointer position.  The first time the 

button is pressed and held, the fuel level shown on the gauge will decrease (

or in some cases 

increase

).  The next time the button is pressed and held, the fuel level shown on the gauge will 

change in the opposite direction.  The direction the fuel level indicator changes will alternate between 
increasing and decreasing every time it is pressed and held. 

  Once the fuel gauge is indicating 

3/4

, wait 8 seconds without pushing the calibration button to save 

the calibration.  The LED display will change back to 

g

 to confirm calibration is saved. 

  Press and hold the calibration button with the LED indicating 

g

 until the 

g

 starts alternating with 

F

.  

The gauge 

full

 tank indication will now be set. 

  Press and hold the calibration button to change the fuel gauge’s pointer position.  The first time the 

button is pressed and held, the fuel level shown on the gauge will decrease (

or in some cases 

increase

).  The next time the button is pressed and held, the fuel level shown on the gauge will 

change in the opposite direction.  The direction the fuel level indicator changes will alternate between 
increasing and decreasing every time it is pressed and held. 

  Once the fuel gauge is indicating 

full

, wait 8 seconds without pushing the calibration button to save 

the calibration.  The LED display will change to 

C

 to confirm calibration is saved. 

  Press and hold the calibration button with the LED indicating 

C

 to exit calibration mode. 

 

 

Summary of Contents for Fuel Link SN34

Page 1: ...Classic Instruments SN34 Fuel Link Installation Manual ...

Page 2: ...020 Page 2 Table of Contents Welcome from the Team at Classic Instruments 3 Before You Get Started 4 Connecting the Fuel Link 4 Fuel Link Wiring Diagram 4 Fuel Link Calibration 5 Fuel Link Operating Mode Functionality 7 ...

Page 3: ...sy to look to a part for an issue with your set Before you conclude that a part may be bad thoroughly check your work Today s semiconductors and passive components have reached incredibly high reliability levels but there is still room for error in our human construction skills However on rare occasions a sour part can slip through Please be aware that testing can usually determine if the part was...

Page 4: ... an optional low fuel indicator to the Fuel Link terminal marked LOW FUEL If you are not using a low fuel indicator this terminal is not used 2 Connect switched 12VDC power to the Fuel Link terminal marked 12 VOLTS 3 Connect a good ground to the Fuel Link terminal marked GROUND 4 Connect the ground wire of an optional low fuel indicator to the Fuel Link terminal marked LOW FUEL If you are not usin...

Page 5: ...cated by the LED display on the module If A is chosen the display will remain on A for the calibration step Otherwise the display will change to g to show setting is complete and to prepare for the next calibration step o Note Perform these steps ONLY if option A was selected o If A is chosen then the fuel sender resistance range will need to be manually entered o Push and hold the calibration but...

Page 6: ...ase or in some cases increase The next time the button is pressed and held the fuel level shown on the gauge will change in the opposite direction The direction the fuel level indicator changes will alternate between increasing and decreasing every time it is pressed and held Once the fuel gauge is indicating 1 2 wait 8 seconds without pushing the calibration button to save the calibration The LED...

Page 7: ...level values to keep sloshing of fuel from moving the gauge indication significantly Keep in mind this will cause the gauge to move slowly even if the sender reading is changing rapidly The low fuel indicator will turn on when 10 or less fuel remains It will turn off when the fuel level rises back above 15 The LED display is off and the calibration button has no effect while in operating mode ...

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