How can you tell if a DC fuse is blown?
Step 1: Identify the blown fuse. Now, after the circuit has been powered off, place the leads on either side of the fuse and if you hear that same beep, and the meter has a very low resistance reading, the fuse is still good. If you do not hear the beep, and/or the multimeter reads OL, then the fuse is blown.
What should I do if my Fuse isn’t working?
Try plugging it into a different power outlet to see make sure it’s working, or plug a different 12-volt device into the suspect socket. (If the electrical accessory itself is at fault, see if it has its own fuse, which is sometimes incorporated into the plug.)
Where do you connect a test fuse to?
View our large range of fuses. Connecting the Test Leads. The black lead should be connected to the Common socket. The red lead should be connected to the Ω or Ohms socket. Not sure what fuse you need?
How can you tell if a fuse has blown with a multimeter?
Then put the probes on either side of the fuse and check if the reading is similar. If it is, then the fuse works properly. If you get no reading or “OL”, then the fuse has blown. If the multimeter reads “Open” or “Not complete,” it means the fuse is broken.
What kind of light to use to test fuse?
You can use a test light or a volt meter. A partially broken wire or dirty connector will show 12.65 volts when tested with the volt meter, but drop out when loaded. A test light is especially useful to load the circuit, a dim light will indicate a poor connection.
Try plugging it into a different power outlet to see make sure it’s working, or plug a different 12-volt device into the suspect socket. (If the electrical accessory itself is at fault, see if it has its own fuse, which is sometimes incorporated into the plug.)
View our large range of fuses. Connecting the Test Leads. The black lead should be connected to the Common socket. The red lead should be connected to the Ω or Ohms socket. Not sure what fuse you need?
Then put the probes on either side of the fuse and check if the reading is similar. If it is, then the fuse works properly. If you get no reading or “OL”, then the fuse has blown. If the multimeter reads “Open” or “Not complete,” it means the fuse is broken.
You can use a test light or a volt meter. A partially broken wire or dirty connector will show 12.65 volts when tested with the volt meter, but drop out when loaded. A test light is especially useful to load the circuit, a dim light will indicate a poor connection.