Professional Electrical Diagnostics

Expert diagnosis and repair for your vehicle's electrical and electronic systems.

Expert Automotive Electrical Repair

Modern vehicles have incredibly complex electrical systems, and faults can be frustrating to diagnose. Our mechanics are technicians in automotive electronics, using wiring diagrams, multimeters, and other specialized tools to track down problems. We repair issues ranging from simple blown fuses and faulty switches to complex problems with wiring harnesses, control modules, and accessory systems. Whether it's a dome light that won't turn off or a power window that won't go up, we have the patience and skill to find and fix the issue.


Parasitic Drain Testing

A common electrical problem is a parasitic drain something in the vehicle continues to draw power after the ignition is off, leading to a dead battery overnight. Diagnosing this requires carefully measuring current draw and then systematically pulling fuses to isolate the circuit causing the problem. It's a time-consuming process that demands a methodical approach. We excel at finding these elusive drains, whether it's a trunk light switch, a faulty module, or an aftermarket accessory that was installed incorrectly.


Electrical Component Replacement

When an electrical component fails, such as a power window motor, blower motor, or seat heater element, replacement is often necessary. We source premium parts that fit and function correctly. Many modern components require programming or calibration after installation, which we can perform with our advanced tools. We also handle wiring fixs, using proper solder and heat-shrink techniques to ensure a steady, weatherproof connection that will last for the life of the vehicle. Trust us with your electrical needs.

Services We Offer


Solve Tricky Electrical Problems

How we find and fix parasitic battery drains and other complex electrical faults.

Leonardi Automotive

7426 Redwood Boulevard, Novato, California 94945, USA

(415) 897-1503