Vantrue VP04 OBD Power Cable User Manual & Setup Guide

Vantrue VP04 OBD cable playing up? Lost the booklet? No stress.

The Vantrue VP04 OBD Power Cable is about as easy as parking mode power gets: plug it into your car's OBD-II port, run the lead to the windscreen and you're done. No fuse taps, no multimeter. Here's how to set the cut-off voltage, read that little LED display and fix the usual hiccups.

Quick Specs

• Connector: USB Type-C
• Input voltage: DC 12V–24V (cars, utes and 24V trucks)
• Output: DC 5V, 2.5A
• Cable length: 3 m
• Working temperature: -30°C to 75°C
• Low voltage protection: 12V vehicles 12.4V / 12.0V / 11.6V, 24V vehicles 24.4V / 24.0V / 23.6V
• Display: LED screen showing the set cut-off and live battery voltage

Works with: USB-C Vantrue models including N5, N4 Pro, N4, N2 Pro 2023, N2S, N2X, X4S, S1 Pro, S2 2-CH and 3-CH, E1, E1 Lite, E2, E3, E360 and E360 ACE, plus other USB-C dash cams.

Installation Steps

1. Find your OBD-II port. It's usually under the dash near the steering column (your owner's manual will show exactly where).
2. Plug the VP04 into the OBD port firmly.
3. Stick the voltage controller (the module with the display and switch) somewhere you can reach it and read the screen easily.
4. Set your cut-off voltage with the switch (see the table below).
5. Plug the USB-C end into your dash cam and check the camera powers on normally.
6. Route the cable neatly around the windscreen and tuck it under the trim. Keep it clear of pedals, the steering column and any airbag areas.
7. Set up parking mode in your camera's settings so it knows what to record while you're away.

Voltage Cut-Off Settings (The Important Bit)

Slide the switch from left to right to step the protection voltage down. On a 24V vehicle the same positions give the 24V values.

Note: For most Aussie daily drivers we'd start at 12.4V or 12.0V. We do not recommend using the 11.6V setting.

Switch Position	12V Batteries (Cars/Utes)	24V Batteries (Trucks)
Left	12.4V	24.4V
Middle	12.0V	24.0V
Right	11.6V	23.6V

Reading the display: every time you move the switch, the screen first shows the cut-off you've just set, then after about 2 seconds it changes to your car battery's current voltage. When the battery drops to your set level, the VP04 waits five minutes and then cuts power to the dash cam.

Common Questions & Troubleshooting

The screen shows a different number to what I set. Is it faulty?

Nope. It shows your setting first, then switches to the live battery voltage. A reading around 12.6V is just your battery's charge, not the cut-off.

The voltage reading doesn't quite match my multimeter.

That's normal. Vantrue quotes a display tolerance of ±0.2V, and it doesn't affect the protection function.

My camera shuts off as soon as I lock the car.

Your vehicle probably cuts power to the OBD port after locking, which varies by make and model. The VP04 can't work around that. A fuse-box kit like the VP05 or VP01 is the fix.

Camera stopped recording overnight. Did the cable fail?

Most likely the battery hit your cut-off and the VP04 did its job. Check the live voltage on the display. If it happens every night, your battery may be tired, or you could shorten your parking recording time in the camera settings.

Can I still use the OBD port for diagnostics or a scan tool?

The VP04 takes up the port, so unplug it (or use a splitter) when a mechanic or scan tool needs access. Plug it back in afterwards and you're back in business.

The trim panel near my OBD port won't close properly.

Some cars put the port behind a tight panel. Re-route the plug so the cable isn't pinched, and don't force the panel shut on the lead.

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Official User Manual

Here's the official VP04 user guide straight from Vantrue, including the switch diagram.