Advice on how to test the current draw of the A/C clutch safely.

I imagine that I would have to use a higher amp fuse for testing purposes, where are the testing 'points' is what I don't know. Never had this problem before and all of a sudden, A/C is a no go and it's hot! My fuse does not last for any amount of time, as others have posted, as soon as the a/c clutch engages the fuse blows.

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Roy Brake
Fort Worth
1980 300SD
1987 560SEL SOLD@216K