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Bob -
My wiring diagram Volvo Service manual for your car shows that connector with a jumper in place. Definitely pin #19 and #11 which is to a ground.
What that will do ASAIK is deepen the mystery. If your car runs OK without it, and it shows as being installed, I dunno. Put in a jumper and see what happens.
BTW If you really want to learn the electrics, get that book. It is Volvo part TP30808/1, 4500.7.85 available at www.volvocars.com/lit and will help a lot. It has about 150 pages, and the schematics in Haynes and Bentley manuals are photocopies from this book.
The 1985 is a transition year, which can be good or awful. I had a 1975 which I found out later was a transition and many owners turned out to be beta test sites (ho ho ho). You have the older body style with more desirable 4 headlights, no high level brake light, the "new" B230F engine with its smaller crank journals, new type a/c compressor, power steering pump, and vibration dampener, and the LH 2.2 FI control system. There are
It's a little peppier than the B23, and most brickboard owners have not mentioned any inherent bad things about that year (unlike some other models).
Good Luck,
Bob
:>)
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