Have decided it is time to try to resurrect the a/c.
The idler was seized solid and the belt missing, both of those situations have been corrected.
However the clutch does not engage.
Supplying 12v to the clutch causes engagement, however I have no power going to the compressor (and the connector was green)

Page AC-13 trouble shooting chart clearly states that the first thing to check is the FL 30A CDS, it then references page AC-4.
AC-4 is a diagram for 2wd single AC system, mine is of course 4WD dual system.

I have found no other reference to this mysterious 30A fusible link, though AC-4 does clearly show
FL 60A am1 plus the 2 at the battery (FL 1.25B and FL 20B) but no mention of the 30A??
AC-13 seems to be the only reference to this fusible link I can find.

Any of you guru's know where to start the hunt for this elusive fusible link, or if it actually exists.

Meantime I will look for the AWOL meter to eliminate the Mag-clutch relay, though I did pull it for a visual, looks brand new inside, can't see it being an issue but....
Thanks