Auto Electrical Services specialise in the fitting of electrical and electronic systems and accessories in motor vehicles, and find and fix faults. Auto Electrical Services can repair a vehicle by connecting a laptop or hand-held device to the engine's electronic control unit (ECU), measure its performance and find the problem, such as loose wiring or faulty parts, test and repair the ECU if it develops a fault, check and test wiring and components in older vehicles using portable instruments, research faults using manufacturer's circuit diagrams and specification manuals