96 GP brake light short

Hi, Is there a known problem with the tail/brake light in a 96 GP? I keep blowing the fuse for the brake lights. I know a little about elictricty, but to find a short. where do I start? When I step on the brakes everything seems to dim (headlights, blower fan,dashlights). There is also a flicker in one of the light in the dash can this be something else or part of the same problem?

thanks for any and all help.