Use Sullivan's "4 Rules" to read wiring diagrams without getting overwhelmed.
Master the multimeter for voltage, resistance, and continuity. Understand when to use a clamp meter, solenoid tester, or non-contact voltage pen.
You haven't truly tested a circuit until you’ve tested it while it’s trying to do work. Tools of the Trade: Beyond the Multimeter dan sullivan fundamental electrical troubleshooting
If you’ve ever felt overwhelmed by a "spaghetti bowl" of wires or intimidated by a digital multimeter, Sullivan’s methodology is designed for you. Here is an exploration of the core principles that make his teaching the industry benchmark. The Philosophy: "Electricity is Simple"
Dan Sullivan’s fundamental electrical troubleshooting methods have become the industry standard for professional diagnostic training. By shifting the focus from checking for "power" to checking for "current flow" and "voltage drops," he empowered technicians to diagnose complex problems quickly and accurately. Use Sullivan's "4 Rules" to read wiring diagrams
Does the light actually not work, or is it just dim?
When faced with a malfunction, Dan Sullivan prescribes a strict, repeatable workflow: You haven't truly tested a circuit until you’ve
Whether you are a DIY enthusiast or a master technician, mastering the Sullivan method is the surest way to become the "electrical wizard" in your shop. If you want to master the craft, start with the fundamentals—Sullivan's way.
His legacy is a generation of technicians who no longer fear electrical problems. They understand that electricity follows rules, and if you know the rules—and follow the logic—the circuit will always tell you exactly what is wrong.