In this article, we'll show you how to replace the bulb, and if that fails, we'll show you how to diagnose a bad socket and probe the wiring with a simple 12-volt automotive test light.

【3-60V DC Wider Voltage Test Range】Compared with the Normal Test Light on the Market,This Test Light Maximum Measure Voltage is Upgrade to 60V,BOAK Auto Circuit Tester Ideal for Checking ...