The most common symptom is erratic or ghost metering. You may see your main water or fertilizer meter "spinning" on the tablet even when there is no flow, or the readings may jump wildly during a mix.
A common mistake is assuming that bolting a wire to a trailer frame is a sufficient ground.
The Rule: A trailer frame does NOT count as a common ground.
The Fix: All components must have their grounds physically connected together with dedicated wires back to a single common point (usually the negative terminal of the main battery). Metal-to-metal contact through a frame is often interrupted by paint, rust, or vibration-isolation mounts.
Before replacing parts, attempt to isolate the source of the interference:
Ensure all wiring harnesses are secured and not rubbing against the frame.
Verify that your pump motors have clean, tight ground connections.
Check that the Power Module ground is clean and making contact with the main system ground.
If you have exhausted all efforts to find the stray voltage and your grounding is as solid as possible, the interference may be inherent to your specific electrical environment.
The Solution: Praxidyn offers a specific isolation device designed to filter out this electrical noise and stabilize your meter readings.