2000 Galant just purchased and has shaking

I just got a 2000 Galant and when I bought the car, I knew it needed new rotars and breaks. I replaced both, but still have a bumping in the car. I had the tires ballanced, and an allignment done on it as well, and it seems like when that happened the shaking got worse? Anyone have any suggestions of what it can be? Also I have a headlight that is going on and off for no reason, you do not even have to hit a bump or anything, what can I do about this problem?

check your engine mounts, the shaking could be coming from your vibrating engine. my suggestion would be to take it for a good drive, do some corners, brake hard, accelerate hard, when the shaking comes up the moast you will know where to look further.
take out the light bulb, spray in some contact cleaner, also on the bulb then screw it back in and see if it works.