1997 Mercury Villager battery

Please elaborate on the symptoms. Did it crank, but not catching to start, or it didn't even try to crank. Do you have any lights on the dash? Did you make sure that the cables are installed correctly, and the connections are tight? Why did he replace the battery on the first place? Were the symptoms present prior to the battery swap?

Anything that you can add and elaborate will greatly help the diagnosis.

its fix it was a fuse thanks though