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Discussion Starter #1 (Edited)
The color A/C wiring diagram shows the colors of the wires going through the 4 or 6 pin connector on the back of the left and right instrument pods, respectively. It also attempts to identify which pin of the connector each wire uses. However, if you match up the colors with the wires in an actual car you will find out the pin number sequence implied makes no sense. To resolve this I have documented the color positions for each connector as follows:


LHS Connector Pinout
Looking at the back of the connector on the harness, with the bevels down, and going clockwise from the top left, the pinout is as follows:

# CW from Upper Left
LHS Color
Function
1​
Green/Black​
“Fari” light​
2​
White/Black​
Instrument Illumination +​
3​
Pink​
Clock and Fuel Gauge +​
4​
Violet​
Fuel Level Sender​
5​
Yellow​
“Luci” light​
6​
White/Black​
Fuel Level “Reserva” light​

RHS Connector Pinout
Similarly, the RHS pod connector is as follows

# CW from Upper Left
RHS Color
Function
1​
Yellow/Black​
“Vent” light​
2​
White/Black​
Instrument Illumination -​
3​
Red/Black​
Oil Pressure Sender​
4​
Pink​
Instrument & Light B +​
5​
Gray​
Oil Temp. Sender​
6​
Brown​
Coolant Temp. Sender​
7​
White/Blue​
“Aliment.” Light​
8​
Gray/Black​
“Freno” light​

More directly, here are photos of the two PC boards with the traces labelled.
1619066

1619067
1619151
1619152
 
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