Poor power supply quality—in the form of dips, dropouts, and other voltage variations—can result in electrical malfunctions that can have serious consequences. To verify that automotive systems will ...

Ametek’s EM Test offers the VDS 200Q Series, a four-quadrant voltage drop simulator that can source and sink current using a programmed voltage in both positive and negative polarities. Ametek's EM ...

Voltage-drop testing is one of the most useful and effective electrical checks a technician can perform. Owners and managers should understand this technique and encourage it. My field experience has ...

We have to stop thinking of our start/charge systems as simply a handful of separate components, and start viewing them as a system. From alternators to batteries and starters, cables and regulators, ...

Diagnosing truck electrical issues can be like chasing ghosts in the machine. Just where is the source of the real problem? Here are five tips to help identify the root cause. After confirming the ...

Edgar, it turns out that most muscle car-era GM factory tachs (including the one in your Chevelle) actually run on full 12-volt power. These GM tachs are a three-wire design: The main power-up wire ...