What will make dash lights blink on and off and lose power?

Dash lights blinking on and off, along with a loss of power, can indicate issues such as a failing battery, a malfunctioning alternator, or problems with the vehicle's electrical system. Poor connections or corroded terminals can also cause intermittent power loss. Additionally, a blown fuse or a fault in the wiring could lead to similar symptoms. It's advisable to have the vehicle checked by a professional to diagnose and resolve the issue.