The caches in this series were:
The One Tower GC501VD
The Fellowship of the Rings GC501W8
The Refectory of the King GC501WT
The Coords of the Ring Final GC501X3
Go to the indicated coordinates and discover the number of the One Tower. No need to poke or pry into any electrical equipment. Use the steps below to decode the coordinates of the actual cache.
Calculations
(1) Start with the number of the Tower (2) If necessary, add zeros to the END of the number to create a ten digit number (3) Subtract 795839112 (4) The result should be a ten digit number ABCDEFGHIJ (5) The coordinates of the cache are N 28 AB.CDE W 81 FG.HIJ
NOTE: Please avoid including any "spoilers" in your log
Congratulations DirtyD13 for FTF