Door locks

Hey all another question. I have had problems out of my door locks not working. They are electric btw. They would work sometimes and then sometimes they wouldnt. Also when I unlocked the vehcle from the hatch 9 out of 10 times it would not unlock the drivers door. Ok so I got to noticing that my seat quit working. So I started check fusses(sp). I noticed that the circuit break in the fuse panel was getting hot. When it would cool off, the doors and seats would work. But the only way it cooled off was by turning the vehicle off for a while. The break was getting so hot you couldnt even touch it. Well, I changed the break, thinking it might be bad. But it wasnt the problem. So I just tookthe break out and left it out. Ofcourse when I done that I lost my power seats and locks. Does anybody have a clue as to what could be causing my problem. I am figuring something is not cutting off or something and its making the breaker throw. I would really love to find out what it is. One person told me I could put a bigger break in and stand by with a fire extingusher to see what starts smoking and that would be my problem..I dont foresee me doing that. any and all suggestions will be greatly appreciated.