Dual tanks. everything works except gauge; it reads empty does not move at all when switching tanks.
Aug 19, 2020 at 4:07 AM
Fuel gauge not working properly
1995 FORD F-150
KEN ZIMMERMAN
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Good morning,
I attached a wiring diagram of the system for you. You need to go to the switching valve under the truck on the frame rail and test the yellow wire for voltage with a voltmeter. It should have about 7 volts on that line for the sender units.
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/how-to-use-a-voltmeter
If it does not have power, then go to the dash and check the yellow wire at the dash for power. If it has power, you have a wiring issue. If it does not then the cluster is the issue.
Roy
I attached a wiring diagram of the system for you. You need to go to the switching valve under the truck on the frame rail and test the yellow wire for voltage with a voltmeter. It should have about 7 volts on that line for the sender units.
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/how-to-use-a-voltmeter
If it does not have power, then go to the dash and check the yellow wire at the dash for power. If it has power, you have a wiring issue. If it does not then the cluster is the issue.
Roy
Images (Click to enlarge)
Aug 19, 2020 at 4:29 AM
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