Automotive electrical diagnosis and repair on Coast Highway 101 in Old Encinitas is the singular focus of Paul's Auto Electric, a specialty shop at 325 Melrose Avenue that handles starter, alternator, charging-system, and wiring-harness faults across vintage, classic, and modern platforms. The shop's parasitic-draw testing and harness-tracing work resolves the same post-collision electrical faults—severed lighting feeds, damaged sensor harnesses, CAN-bus open circuits—that the general mechanical team at Complete Car Care Encinitas on El Camino Real flags during full-vehicle teardown inspections but lacks the oscilloscope bench to isolate. Classic-car owners restoring pre-OBD vehicles—points ignition conversions, generator-to-alternator upgrades, gauge cluster rebuilds—make up a significant share of the workload. Modern-vehicle electrical faults traced through this shop include BCM (body control module) communication errors, TPMS sensor failures, and parasitic battery drain isolation—the same circuits that feed fuel-delivery and emissions systems serviced at nearby stations like Berri Brothers on the Leucadia stretch of the 101. Technicians utilize oscilloscope-based waveform analysis and milliamp clamp meters to isolate parasitic draws below 50mA on vehicles with 40-plus-module CAN-bus architectures.