the instructions for series 1 are pretty much the same for 2/3 with one of the wires changing colour but all pin locations staying the same
The following wires need to be moved around, in order for the Mid/High Cluster to function correctly,
1. The Park Lamp Dial (+ Positive) Illumination needs to be moved from Pin 13 to Pin 2. - Brown
2. The Dial Negative Dimmer Illumination needs to be moved from Pin 21 to Pin 3. - Light Blue / Red
3. The
ABS Warning Lamp Wire needs to be moved from Pin 8 to Pin 23 - Orange/Black
4. The R.H. Side Indicator wire needs to be moved from Pin 19 to Pin 26 -
Green / Light Blue (Series 1 is White / Light Blue)
(Using the Photo Below) The Pin numbers start from bottom right and go in a U shape to the top right spread over the 2 connections, so a total of 28 pins one connection has 8 pins (that does not exist on base model wiring) and the other has 20 pins
this photos is of the back of a AU3 Fairmont Ghia Cluster with a AU3 Forte Wiring loom, with the pins removed from the connection