I have spent the past week (since I bought the car) trying to find out what the warning lights mean. I have a 1990 ls, and the battery, brake, antilock, rear tail light, etc. keep coming on. A friend who also owns an ls said it's just the alt or battery. Sure enough, as i get home from buying the car, it wouldn't start again. So the next day i buy and install a new battery and alt. It didn't fix the problem. It starts and drives perfect, but these lights are driving me insane. They stay on til the car is warm, and go away when the car comes to a stop. But the blower motor (heat) dies down quite a bit, and the lights dim. As soon as i get on the gas again, the warning lights come on again. But all the interior light get bright, and the blower motor blows harder. I'm guessing I have a draw somewhere? I have a good mechanical ability, but I am clueless when it comes to electronics or wiring. I am very ashamed to admit it, but I don't even know how to use a multimeter... I have seen this instance in several forums, but i have yet to find a definite answer or solution. I would appreciate any help on this subject. If this has been covered, and solved in any other post, I am very apologetic. The only answers I have found are "it's your battery", or "it's your alternator". As I mentioned, I have bought new, and replaced both. Not remaned, btw. Even if someone can lead me in the right direction, i would be forever in debt.