John G. Pens is an Electrical Engineering Expert Witness with over 25 years of experience in commercial vehicle electrical and electronic systems. John evaluates Component Failures, Diagnostic and Troubleshooting Procedures, Service Practices, and Engineering Documentation for heavy-duty and commercial trucks. His work addresses a central question in commercial vehicle litigation: whether an electrical or electronic failure originated in how a component was designed, manufactured, supplied, diagnosed, or serviced.

An engineer since 1999, John holds a Bachelor of Science in Electronic Engineering from DeVry University and is a member of the Society of Automotive Engineers (SAE). At Federal Signal Corporation, he led new product development and directed application engineers for a $100 million portfolio of electrical and electronic industrial systems. At Hendrickson International, he coordinated technical and manufacturing initiatives supporting electrical and mechanical system integration on Volvo's global truck platforms.

John spent 14 years with International Motors in engineering, product management, procurement, and senior leadership roles. As Senior Development Engineer, he led product development for remanufactured electronic components. He later oversaw a $500 million aftermarket portfolio that included electrical and electronic components, then led a $300 million service contract business across North America that included electrical system reliability initiatives.

His analyses draw on Design Failure Mode and Effects Analysis (DFMEA), service diagnostics and telematics data, warranty and reliability records, and field performance data. Today, John serves as an Electrical and Electronics Expert Witness with Evidence Solutions, Inc., where he leverages his background in electronic systems engineering, remanufacturing, service diagnostics, and aftermarket support to commercial motor vehicle cases involving component failure and service procedures.