The Seachoice 15061 Circuit Tester is a versatile tool designed to help you diagnose electrical issues in both 6V and 12V systems. Whether you re working on your boat car or any other vehicle this circuit tester is essential for locating grounds identifying open circuits and detecting shorts. Whether you re maintaining your boat s electrical system or working on a vehicle the Seachoice 15061 Circuit Tester is a reliable and user-friendly tool to ensure your electrical circuits are functioning correctly. Its compatibility with both 6V and 12V systems makes it a versatile addition to your toolkit.