The abs light wll come on if there is a fault with your abs system. It does not necessarily mean you have serious problems, although at some point it might be. Since you have one abs sensor on each wheel it could be that one of them went bad, another thing is your abs pump or that you got air in the brake lines. Hope this helps.
This usually means a bad or wrong bulb in the tail lights
either your brake light switch located behind the brake pedal is bad or your fuse is blown
you probably need to lift up on the brake pedal a couple of times to reset the brake switch. worked on our 86
If your brake lights are not working, and you get stopped you may get just a warning, but more likely a "Fix-It" ticket, Brake lights are a very important safety feature. You will have however many days the law says in your State to get them fixed, then you must take it to the Highway Patrol Station, local Police station, or any cop that will sign off on it, then take that to the court to prove they are repaired. There is usually no fine if you do it in time.
Possible ground issue at the taillights.
replace the relay under the hood Also check brake lights switch had the same problem switched bulbs and worked fine
The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
IT'S PROBABLY JUST A PROBLEM WITH THE PRINTED CIRCUIT BEHIND THE DASH.
Check the bulb.
Check to see that the wiring is still in good shape and that they are all connected. As my previous car aged, this was a problem. Also, check the bulbs and their sockets. Sometimes they are dirty or no longer seat probably.
If the bulbs and fuses are fine, it must be your brake light switch attached to the arm on your brake pedal.
I suspect either a faulty ground circuit, or a much easier fix, faulty bulb/bulbs. You might be surprised the havoc a grounded out bulb will cause an electrical system.