The first chart of
Reply #10 is inaccurate and should not be used as a general reference. If it
were accurate, instrument clusters could not be swapped for each other regardless of their pins' profiles because four of the pin connections significantly differ between the model years. That is
not the case. Regarding differing pin profiles: there are several posts at various classic Brick sites that indicate cluster pins have been mated to sockets having differing profiles with or without some tweaking of the pins. Whether that type of swap will work in
all cases is uncertain.
All diagrams and charts are likely to have some inaccuracies but
these in the first chart of
Reply #10 could cause obstacles if trying to diagnose malfunction in the cluster. The corrections to the first chart are as follows. They can be verified using wiring diagrams from various sources.
The first chart in Reply #10 should have the same entries as on the second chart in Reply #10 regarding these pins:- Pin 16 should read Tach sensor from coils not Speed sensor from coils
- Pin 21 should read Turn signal cancel on flasher relay) not Tach sig.
- Pin 22 should read Speed sensor not Tach pulse encoder
- Pin 23 should read Ground from Speed sensor not Tach pulse encoder
I have attached the source chart for these corrections here. The second chart in Reply #10 is a fragment of it.