FUEL GAUGE WILL NOT WORK - DT 125 R Yamaha Motorcycles

If your fuel gauge is not working, there are several potential reasons for this issue:
1. Faulty Fuel Sending Unit:
-The fuel sending unit is a component in the fuel tank that measures the amount of fuel and sends signals to the gauge.
2. Faulty Gauge or Instrument Cluster:
- The gauge itself or the entire instrument cluster may be malfunctional. Electrical issues, such as a blown fuse, could also be a factor.
3. Wiring Issues:
-Broken or damages wiring between the fuel sending unit, gauge, and instrument cluster can disrupt the communication and cause the gauge to malfunction.
4. Bad Ground Connection:
-A poor ground connection can lead to inaccurate readings on the fuel gauge. Check for loose or corroded ground connections.
5. Fuse Problem:
-A blown fuse in the vehicle's fuse box could disrupt the electrical circuit that powers the fuel gauge. Consult the vehicle's manual to locate and check the fuse related to fuel system.

If the tail lights, low fuel light, temperature gauge, and fuel gauge are not working, there could be several possible causes:

1. Blown Fuses: Check the fuses for the tail lights, low fuel light, temperature gauge, and fuel gauge. If any of these fuses are blown, replace them with a new one.
2. Loose or damaged wiring: Inspect the wiring for the tail lights, low fuel light, temperature gauge, and fuel gauge. Look for any loose connections or damaged wires. Repair or replace any damaged wires and ensure all connections are tight.
3. Faulty sending units: The low fuel light and fuel gauge are connected to the fuel sending unit in the gas tank. The temperature gauge is connected to a temperature sending unit on the engine. Check these sending units for faults, and replace them if necessary.
4. Faulty instrument cluster: The instrument cluster itself could be faulty, causing the temperature and fuel gauges to not work. A qualified mechanic can test the instrument cluster to see if this is the issue.

It's also possible that the trike has a separate electrical system for the tail lights, and that this system is malfunctioning. A qualified mechanic can test the trike's electrical system to determine the cause of the issue.

Could be the gauge in the instrument cluster ! There are videos on youtube on testing fuel gauge .
Repairing Fuel Gauge Problems 2004 Mercury Marquis EricTheCarGuy

How to test fuel gauge tank sending unit P0463 GM

You don't say what make , model an year vehicle . Testing before replacing parts is the way to a proper fix .

If your fuel gauge isn't working , it's not a fuse ! The gauge or the sending unit in the fuel tank is bad . If you had other thing's not working in the instrument cluster I would say probably a fuse. There is not a fuse just for the fuel gauge . Fuel Gauge Tech How To Properly Diagnose Faulty Fuel Pump Sending Unit

Are you sure its not the fuel sending unit and not the fuel gauge itself.Because the sending unit controls the fuel gauge level and if the float gets stuck then the fuel gauge will not work.

If the bike came with a fuel gauge, no problem. Just work the fuel gauge up out of the tank. It's held in by a rubber o-ring. The wires under it are very short so be careful. The sender unit is inside the tank. You'll have to determine which is the problem piece and replace it.

If your bike did not come with a fuel gauge, you'll have to purchase a left side fuel tank if that's the location of the original fuel gauges. I do not know where Harley puts the fuel gauges on the Softails. If they have a fuel gauge on them, they are fuel injected. I do not work on fuel injected bikes, carbs only. Sorry.

Good Luck
Steve

im not an expert but my chevy s-10s fuel gauge didnt work for like a year! and my fuel pump just went like a month ago replaced it and voila i have a fuel gauge again!

There could be two problems here:
1. That buoy floating tank is not working properly
2. That the electrical system that fails to submit the dashboard.

Review this information:
- ZJ-Secc-8E-Instrument-Cluster-and-Gauges
Page 2 - Fuel Gauges description
Page 4 - Voltimeter/Tachometer/Fuel Gauge/Low Fuel Inoperative
Page 10 - Specifications
- ZJ-Secc-14-Fuel-System
About Fuel Tank components
- ZJ-Secc-8W-Wiring-Diagrams
Fuel Tank and Gauge & Sensor Units Sending (Page 93 and next)

Good luck... and remember rated this help.