anit-lock light

Left interior lights on over night so i had to jumpstart my blazer,,afterwards i noticed that my anti-lock light was staying on and also notice a constant squealing noise that stops when i hit the brakes,,i also have a problem somewhere with my interior lights not coming on when i open the door,,sometimes they do and sometimes they dont?? Thanks for any help

The squealing noise is a good indication that your front brake pads need to be replaced. This could also cause the brake light to come on if the
pistons in the calipers extend too far and the brake fluid level goes low.
(Could also indicate a fluid leak)