Those LED lights on your TU-500 and TU-600 lets you know the status of you GPS connection and connectivity. 🚥
In this diagram, you’ll find the information.
For more details, please follow this link from our Installation Guides https://content.trackunit.com/hubfs/PDF%20Assets/Installation%20Guides/Trackunit%20%7C%20Installation%20TU600%20%7C%20EN.pdf?_ga=2.141919666.1828221907.1652085141-1508351258.1642617223
And from our Help Center as well 😉
https://helpcenter.trackunit.com/s/article/What-do-the-LED-status-indicators-on-Trackunit-Raw-mean?language=en_US