For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

A 12-foot, flexible coiled cable clamps onto a source and accurately detects whether it’s power or ground, and the circuit tester has surge and over-voltage protection.

This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...