How To Use A Test Light To Check Fuses

Tuesday, July 22, 2014

How To Use A Test Light To Check Fuses

If using a test lightlamp put the ground clamp on a sufficient ground located or negative battery terminal touch the test probe on the two test points on the fuse if the test lightlamp does. If power is present the bulb will illuminate confirming the circuit has power and is operating properly.

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A test light utilizes a bulb held in a probe attached to a sharply pointed rod with a connection lead.

How to use a test light to check fuses.

Use a test light.
Touch the red test lead to the first metal square then to the other.
You should see a voltage reading in the 12 14 volts range.

Before you test a fuse with a multimeter turn off the equipment and remove the fuse by pulling it straight out of its slot.
With the ignition switch in the on position touch or clamp the black test lead to a good known ground.
List of tools use.

Part 3 of 4.
Timeline below if you would like to jump to a specific section a test light is a simple quick tool to test for electrical issues in your car.
Clamp the end of the test light or the negative cable of the voltage meter to a good ground close to the fuse box.

Hold the fuse up to the light and check the metal wire for signs of damage or a break.
By using the test light you can quickly and easily test any.
If you do not have a fuse diagram to locate a specific fuse you can test each fuse individually with a test light.

If you see either of these you will have to replace the fuse.
How to check automotive fuses quickly and accurately using a 12 volt test light.
This design is optimal for piercing a wire testing a fuse or checking the surface charge of a battery.

Then you will need to locate the location of the fuse box in your vehicle and use the fuse diagram to test and replace the faulty fuse.
Turn the ignition switch to the run position.
On the end cap of a blade fuse youll see two exposed areas of metal designed for testing.

Check one end of the first fuse.
Turn the meter to ohms then touch the positive and negative leads together and check the reading.
Next put one lead on each end of the fuse and check the reading.

Always use the proper test light or voltage meter to check the vehicles fuses.