A couple of days ago i changed the alternator in the lexus, every time i would press the breaks or used anything electrical in the car the dash would blink and the radio would shut off for a second or two, after i installed the alt. it was alright for a day and then it continued doing the same thing. so what are your thoughts on what theproblem could be?

 

bump

 

Read this thread here...Mine was doing the same thing...

Car dies when I press in the brake

General consensus was check your grounding...