I'd have to check my schematic but I think that is the same fuse that blows when the kickdown switch is shorted. The wire leading to the transmission wore through near the transmission mount. Just wrap some electrical tape around it.

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)