headlights on 1990 Ford Crown Victoria

headlights are staying on and draining battery so i replaced headlight switch but its still not working properly

Asked by for the 1990 Ford Crown Victoria
Has your car got lights that are supposed to stay on for a few minutes after you exit the car? Perhaps you do need to charge the battery and do a hydrometer test and high rate discharge test (performance load test) on the battery to ensure it is serviceable.
I hope a Ford technician sees this post and offer more incite.