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Revised:  March 9, 2020 

Page 3 

 

Welcome from the Team at Classic Instruments! 

Our congratulations and appreciation for your purchase of one of the finest quality sets of specialty instruments 

ever produced!  Your instrument set has been conceived, designed, and manufactured by Classic Instruments, Inc. in 
the U.S.A.  Each instrument has been tested and certified for accuracy and quality before packaging and shipping. 

For trouble-free installation and operation follow the instructions exactly as outlined.  Your instruments were 

assembled to precise specifications and although each has a seven (7) year warranty covering defective parts and 
workmanship – this warranty will not cover instruments or sender units which have been installed incorrectly. 

Follow our recommended procedures for installation and proper hookup to maintain the value and appearance of 

your instrument set during many future years of accurate and dependable service! 

 

 

LIMITED WARRANTY 

 

Classic Instruments, Inc. (CI) warrants to the original purchaser that any CI product manufactured or supplied by 

CI will be free from defects in material and workmanship under normal use and service for a period of seven (7) years 
from date of purchase. 

Improper installation, attempted repair or adjustments by other than CI shall void this warranty.  Disassembly of 

any instruments or senders for whatever reason shall specifically void this warranty. 

It’s always easy 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 truly defective or damaged 
by assembly or usage.  Don’t be afraid of telling us that you “blew it”, we’re all human and in most cases, replacement 
parts are very reasonably priced. 

Purchaser requesting a product to be repaired or replaced under warranty must first call CI at 1-800-575-0461 

before the return of defective part.  Send defective part to 826 Moll Drive, Boyne City, MI 49712, USA.  Include a 
written description of the failure with defective part. 

Purchaser agrees and accepts that under no circumstances will a warranty replacement be furnished until CI has 

first received, inspected, and tested the returned part. 

All other warranties expressed or implied are hereby excluded including any implied warranty of merchandise and 

implied warranty of fitness for a particular purpose.  The sole and exclusive remedy for breach of this warranty is 
limited to the replacement set forth above. 

It is expressly agreed that there shall be no further remedy for consequential or other type of damage, including 

any claim for loss of profit, engine damage or injury. 

 
 
 
 
 
 
 
 
 

 

TECHNICAL ASSISTANCE 

1-800-575-0461 

OR  

Visit our website for the latest in gauge design and updates to our installation manual 

 
 

www.classicinstruments.com 

 
 
 
 

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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