Ensure the component being tested is .
Touch the leads to either side of a fuse. A beep means the fuse is good; silence means it’s blown. 3. Measuring Resistance (Ohms) Set the dial to .
In this guide, we’ll cover everything you need to know about this digital multimeter, from where to find the official manual to a breakdown of its core functions. Why You Need the Equus 4320 Manual
If you tried to measure current and the screen stays at zero, you likely blew the internal fuse by connecting it in parallel instead of series. You will need to open the back cover (refer to the manual) to replace the fuse.
The Equus 4320 is a "hands-free" digital multimeter, meaning it often comes with rugged rubber boot protection and test lead holders. Key specs usually include:
Look for the link under the Downloads section.
Save the PDF to your smartphone or tablet for easy access in the garage.
Instructions on how to replace the 9V battery and the internal protective fuses. Key Features of the Equus 4320 Multimeter
This is ideal for testing spark plug wires or ignition coils. Troubleshooting Common Issues
Understanding CAT II/CAT III safety ratings.