1999 Mercury Villager Fuse Burned

The fuse for the Power windows, Power Lock, Sun roof, Power seats and Power mirrors burned. I changed it an it worked. I used the power lock to open all the doors and next time I wanted to use the poer lock to lock the car the fuse was burned again. I checked in the front doors if there was a wired bad or touching the frame somehow but I could not find any sign of a bad wire. I can hear a clicking behind the steering wheel when I hit the power lock switch. Check it out and I seems to come from the SEC box. I guess thats what it is.