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The majority of the time the fusible links the blow when you remove the battery cables for a starter run on are the blue 12ga.
Fusible links and fuses do two similar but different jobs.
From the Fusible Link 101 sticky
http://www.steelsoldiers.com/showthread.php?122571-Fusible-Links-101
Here is a list of the CUCV Fusible Links taken from the Tech Manual TM 9-2320-289-34
Diagram - Wire Label - Location - Use - Size
Diagram E-1 - 1 RED-2Z - 24v POS Terminal Board - 24v to the...
Sounds like the starter solenoid stuck. Possible the DH relay but not likely.
The CUCV Helpful Threads sticky covers the replacement of the fusible links, what happens when you remove one battery cable and most of the other issues.