Why would the puple fuse-able link get no power when the starter is ground but get power when not grounded?

Question

The starter is in place when grounded and there is no turn at all on the starter both when grounded and not. Had a new starter on and the same thing happened.

Answer 1

The fuseable link must be installed on the positive lead on the starter motor. If there is no power going through the link, then replace the link.
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Answer 2

Sounds like the link is fried.