Why do the dash lights turn off when you hit a bump on a 1997 Nissan 200sx?

The dash lights turning off when you hit a bump in a 1997 Nissan 200SX could be due to a loose or damaged electrical connection, such as a faulty ground wire or a loose bulb socket. It could also indicate a failing ignition switch or a problem with the vehicle's wiring harness that is disrupted by vibration. Inspecting the connections and wiring for wear or damage is advisable to resolve the issue. If the problem persists, consulting a professional mechanic may be necessary.