Fuses protect electrical circuits and components from excessive current. When the current exceeds a safe limit, the fuse breaks the connection by melting a thin internal metal strip, stopping the flow of electricity and preventing potential damage to the T3 Dash Cam device. You will need a fuse puller and multimeter to perform this check.
Locating the Fuse
You will find the fuses encased in red, attached to the power box of the camera.
Note: If the harness is secured with zip ties, you may need to cut them to access the fuse. Be sure to re-secure both the accelerometer and the harness afterward.
Step 1: Remove the Fuse
Use a fuse puller to safely remove the fuse from its slot.
Perform a visual inspection: Look for a break or gap in the metal strip inside the fuse.
⚠️ A fuse may look intact but still be faulty, do not rely on visual inspection alone.
Step 2: Test the Fuse with a Multimeter
Set your multimeter to continuity mode or the lowest resistance setting.
Touch one probe to each of the two metal posts on the fuse.
Step 3: Interpret the Results
Continuity Mode: A beep or low resistance reading (close to 0 ohms) means the fuse is good.
Resistance Mode:
A low resistance reading (close to 0 ohms) means the fuse is good.
A high resistance or “OL” (open line) indicates the fuse is blown.
Replacement Tips
If the fuse is blown, replace it with a new fuse of identical resistance and specifications to avoid overloading the circuit.