v ehicle,ford escort,1997?

i have a 1997 ford escort. my fuse for my wipers was blown so i changed it. my problem now is that it keeps blowing my wiper fuse however my air conditioner stops working as well. so i unpluged my wiper motor and replaced the fuse AGAIN then my air conditioner works fine but as soon as i plug my wiper moter in it blows the wiper fuse and the air conditioner stops working as well.we replaced the wiper motor and it is still doing th same thing. what else could it be?