From the olden days, here are details of the wires that must be moved
on the 14 pin connector to use a tach instrument cluster in pre 1986
analog clock dash.

  This was written by list electrical guru David Beierl

Here's a circular list.  First column is where the wire used to be in
the
connector.  Second is where it goes.  Third is where the displaced wire
needs to go.  It's convenient to know that immediately when you have
wires
squirming all about.

80-84   85+ which goes to       85+
3               1                       none (1 was vacant)
4               2                       3  (cut and splice as below)
5               3                       1
Old terminal 5 goes to ground.  It is jumpered inside the old panel to
old
terminal 2, which provides a ground for the 4-way flasher's pilot
light.  No, I can't imagine why they did it that way. (!) Anyway, splice
the lead that used to go to pin two into the one that used to go to pin
5,
and run the pair to pin 3.
None            None                    2
7               5                       3 (see previous note)
6               6                       6
8               7                       5
9               8                       7
Tach            9                       8
14              10                      13
13              11                      14
x               12                      none (High oil pressure except
'85
which has none.  Ground to keep buzzer from going off, or make more
elaborate arrangements)
10              13                      11
11              14                      10
Old pin 12 goes to a connector under the dash and stops.  You can splice
in
your tach wire and use this female terminal to go into pin 9 (it was the
glow plug indicator for Diesels).

If you need more I'll reference to your tables, but this is all you need
to
do it from scratch.

david

David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon.htm
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"