in regards to the  hare/tortois  shifter-
I ended up  having a stuck spool again in that shifter.    New are available, a  sub'd-up  number for newer series.
They use 2 wire instead of  the single.. so of course, an adapter pigtail is req'd.  I'm gonna  tear the old spool apart to see if it's  cleanable,  or  if it's permanently crimped together.

After  getting the  $52 adapter in-hand,  I see it's  a popular  connector found  in any electronics outlet.
Made by  AMP,  it's called a  'Junior Timer connector'    for like  85 cents... 
question-   when buying a  plug such as these,  do they come with the terminals?  that may add to the cost a buck or so.. 

Seeing there's  another  4 solenoids on this tractor  that could need replacing down the road,  I've found a slightly cheaper way to wire it up.  
I added an inline 25 micron hydraulic filter to the  line feeding that  spool for about 20 bucks. 

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