need help, my timing is fine and my brake lamp keeps lighting on and off. My brake fluid if at the max, I that's why the light keep doing what it doing. do you think it has to do with the vacuum with the braking system or the whole vacuum system?

 

okay I notice the front bushing is torn does that make the car shake a lot and another thing my steering pump went bad meaning it was leaking and I thought by replacing it would stop the shaking but no and also I put the brake fluid in by accidently mixing with the old steering fluid that was still in there I don't know if that would make any difference causing it to shake a lot. please any advice would be great thanks.