The Trailsafe Break Away system has a status light on all models to tell you if it's operational. This is similar to Brakesafe's test button. You can also opt to get the Bluetooth TrailCheck in order to monitor this from the car. The operation of the Trailsafe and it's status light should be checked everytime the vehicle is towed.
If you noticed the red warning light active on your Trailsafe it usually means that either the battery is too low or it has been low recently and the Trailsafe is showing you that there was a problem.
The Amber light lets you know that the battery is getting low but is not yet at a critical level.
No light means there is no power getting to the unit.
A purple light means that the the system is stuck in calibration mode.
The first step is to ensure that your battery is fully charged. As the Trailsafe uses the house battery to power the brakes and brake lights, it is monitoring this battery at all times. Ensure that the house battery is fully charged before continuing. This should resolve issues where an amber light is displayed.
If the battery falls below minimum levels, the Trailsafe will go into fault mode and display the low battery warning. Once the battery is fully charged, you'll want to reset and recalibrate the Trailsafe.
If there is no power to the unit, or the purple light is on, you'll need to check the fuse and recalibrate the unit.
Follow the steps in the article "How do I replace my Trailsafe Fuse?" to reset and recalibrate your Trailsafe once the battery is fully charged.