2000 Other Jeep Models FUSE BLOWS EVERYTIME I HIT BRAKES

Installed new tail lights on my truck. Someone told me the drivers side brake lite was out. I took the light out, and put it back in and it worked. Right after it worked the fuse blew, and all brake lights were inoperable. I put a 20amp in and as soon as I hit the brakes it popped again. Tried a 30 amp, just to see, and it didn't pop, but the light was very dim when I used the brake. I took the 30 out and put the original back in 15amp, and it popped again. The wires are also getting pretty hot where they enter the socket. Any suggestions?? Going to remove all bulbs, and see if I can narrow it down today, I pretty much know it is the drivers side though, because that is when the fuse started to blow.