Others may be aware of this problem but in case you are not - - -my brake buddy is wired directly to the battery and fused there with 15a fuse. On our trip north I blew that fuse and found that the male 12v plug on the Brake Buddy had overheated. I assumed the plug was bad and had it replaced. Same thing happened. I called Brake Buddy and they said that it was my car battery. They said that if the battery was not capable of a full 15a of power it would cause this problem. I had not had a problem with the battery, never exhibited any sysmptoms of being bad or low. Had an amp load test done on the battery and sure enough, it was weak. Problem solved.