I think starting in '86 a second 0.3 BAR oil pressure switch was added to
the gas engine. Cluster pin 12(yel) is the existing 1.8 BAR wsitch, and pin
13(blu/blk) changes to the 0.3 BAR switch. Both of these wires loop through
the relay panel before they go to the oil wsitches.

-Dan
'87 Syncro "Quadro"
'97 GTI VR6 "Fuba"

On Mon, 26 Jan 2004 14:33:45 -0800, J. Harvey <jtharvey2@HOTMAIL.COM> wrote:

>I just picked up two instrument cluster wiring harnesses.  One is out of a
>1985 and the other a 1990.
>
>The '90 has an additional wire (solid yellow, pin#12).  What's it for?
>
>-John
>
>'85 Silver Sunroof
>'91 GTi 2.0 8v
>'76 BMW 2002
>
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