Is something darining your car's battery? Don't pay a mechanic! Use a multimeter and these step-by-step instructions to perform voltage drop tests to isolate the circuit that is draining your car's battery. Includes troubleshooting tips and advice for all levels of auto repair experience. Sponsored by BBB Industries - makers of premium alternators and starters that meet or exceed OE form, fit and function. http://www.BBBind.com Related Video: How to Use a Multimeter to Troubleshoot Common Problems http://www.youtube.com/watch?v=aDy9-lGNeQM Eric the Car Guy is an ASE-certified Master Technician based in Cincinnati, Ohio.