Is there common issues with the battery on a 93 being drained. on 1993 Ford F-150 Lightning

The alterator is fine, silinoid is fine. Have not tried an amp tester yet. Any advise where to start. I know a little but not alot.

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2 answers
You need a qualified tech that knows how to check for a parasitic draw.
could b several isssues have it tested by your mech