ac keeps blowing fuses on 1990 Cadillac DeVille

My 1990 Cadillac blows a fuse every time I turn the ac on. Can anyone tell me what the problem is? When the fuse blows every light on the dash panel goes out.

Asked by for the 1990 Cadillac DeVille
could be compressor failure. get it checkked to confirm. this would be an expensive guess.