Mechanics fix electrical car problems, while electricians mostly work on structures such as homes. The mechanic, however, should have experience with vehicle electronics.
Electrical problems can range from very minor to very serious. Many repair shops use diagnostic equipment to determine what the electrical problem is, and some specialize in automotive electrical repairs.
It is common for electricians to work in the construction field. They may wire up new homes and other types of buildings. Some are also trained to wire or repair machinery or electronics, and they can even work with engineers and specialists in other fields.