In addition to engine diagnostics, Mike & Dave’s Pro Marine offers complete electrical and system diagnostic testing for boats of all sizes and types. We inspect wiring, batteries, charging systems, ignition components, sensors, and control modules to ensure every system is operating correctly. Electrical issues are often caused by corrosion, poor connections, or hidden wiring faults — problems that can be difficult to identify without professional testing equipment. Our diagnostic process includes system scans, performance evaluations, and real-world testing to confirm reliability under operating conditions. Whether you need pre-purchase diagnostics, troubleshooting for recurring issues, or routine system checks, our diagnostic testing services provide peace of mind and dependable results. When accuracy matters, trust Mike & Dave’s Pro Marine for expert marine diagnostic testing that keeps your boat running strong.