Tag Archive for ‘test lights’

How to use a test light to diagnose problems

test light courtesy of marineengineparts.com 135x150 How to use a test light to diagnose problems

The most problematic part of this new model of thermometer is the addition of the red clamp.Image courtesy of marineengineparts.com

A test light is a small and easy-to-use electrical device which allows you to test positive circuits in your car for voltage, making it a great diagnostic tool for DIY car repair. If your headlights won't turn on but your fuse is intact, for example, a test light can help you check the circuit and the grounding points to see where the problem lies.