This is where most people fail. The VA028 is an device, not a "T-Piece" device. It must be installed in-line with the ECU.
The module tracks voltage and current independently via an onboard analog-to-digital converter (ADC). Users can view electrical performance concurrently without manually flipping toggle switches, preventing dangerous operational blindspots in high-draw environments. 3. Reverse Polarity Protection
If you are currently planning a build with this module, tell me about your project: What are you using, what is the maximum load current , and will you be utilizing a shared or isolated power supply for the display? I can provide a step-by-step wiring checklist tailored to your specific hardware layout. Share public link hks-va028-v2.0
The logic supply voltage (thin red wire) is dropping below 4.5V. Switch to an isolated power supply rather than tapping the monitored circuit.
If you want to know more about similar products or specific applications for this meter, HKS-VA028-V2.0 in your region. Comparison with other digital ammeters. Share public link This is where most people fail
[ Thin Harness: Logic Power ] ├── Red Wire --> Connects to (+) DC 4.5V - 30V Independent Supply └── Black Wire --> Connects to (-) System Ground Reference [ Thick Harness: Current & Voltage Measurement ] ├── Yellow/White Wire --> Connects to the (+) Target Load Terminal (Reads Voltage) ├── Black Wire --> Connects to the (-) Battery/Power Source Terminal └── Red Wire --> Connects to the (-) Load Return Terminal (Passes through Shunt)
I can provide step-by-step guidance to ensure your meter functions flawlessly. Share public link The module tracks voltage and current independently via
HKS-VA028-V2.0 : The Ultimate Guide to the 0.28" Digital DC Voltmeter Ammeter
Note: The meter reads current by intercepting the ground return path (low-side sensing) via its internal shunt. Miswiring the thick wires directly across a power source will create a short circuit and destroy the module. Common Applications