My 78 Z rear brakes lights are always on when the ignition is off. This is a new problem which occurred today. Any asistance would be appreciated. I disconnected the battery to turn lights off. Please help.

Common problem.

There's a plastic stud that contacts the brake switch plunger. Yours probably fell off.

Look at the brake pedal and where it contacts the brake switch.

1¢

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Yep. Look at your carpet and you will see tiny bits of plastic debris that used to be the button that the switch contacted when the pedal was at rest. As a quick (or permanent) fix, simply replace the button with a small bolt and nut. You can either buy a new plastic button at the dealer, or leave the bolt and nut. Mine has been a bolt for years. Other than non-originality, it works perfect.

Good morning. Thank you for the prompt response. Have a great new year.