Yak, thanks for the response. Original radio with a non powered fixed antenna. At first I thought it was caused by using the turn signal switch but now I'm sure the fuse only blows when I apply the brakes. But not all the time, can't duplicate in the driveway. Cruise control hasn't worked in years. I looked at the bulbs and I'm not sure if they are the right ones but I'm on my way to get 2 new correct bulbs. I just drove about a half mile and couldn't get it to blow. The fuse in question is the 8amp in socket 12.