I feel sorry for the car, not for the driver. Don't drive when you don't know what you are doing, you can injure someone else because of you're recklessness. And always have a multimeter https://totalguide.org/best-multimeter/ with you. A multimeter is an essential tool that measures AC/DC voltage, current, and resistance. Some advanced multimeter models are able to measure capacitance, temperature, continuity, and diode test. This is such a useful tool to have.