Does anybody know where the sc300 tail lights are grounded? I am getting a flicker in my headlights whenever I step on the brakes, or use the turn signals,, I am thinking it is a bad ground for the tail lights causing a high amp draw. I have replaced the Alternator, and the battery, same problem.

Also the a/c - heat fan inside the car cycles up and down with the turn signals.

Any ideas??

I have a 93 sc300, i am also having that issue, but its more than just my brake's or turn signals, when i put on my headlights it does it. i went to the shop and had them check my starter alt and battery and they were all fine. but the problem is only once in a while, i just dont know what to do, do you have any more details with that concern that could help me out