dash lights
 

Hi all,
I am new here, and was hoping to find some help.
I have 1968 Olds 442 convertible. Have had it for about 3 years, with no isses until this year. Now when I turn off the engine and remove the key, the red "gen" light stays on, and the battery drains?
Can anyone help with were to start looking for the issue?
Let me know what additional information is required.
I oppologize, if I have posted this in the wrong place.
Thanks in advance