Hello all. Hopefully I can post a pic to help out with my problem. 1989 244 MT, 2.4 system.Yes, Art. I'm still working on the electrical problem you sent the diagram on. Anyway as I pulled the dash assembly out I noticed a connector with three wires just hanging there amongst the wiring harnesses. This is a four hole unit with round connector holes. There are three(3).wires attached. One blue wire going to one hole and a purple wire and a yellow with red stripe going together to another connection hole. The connectors seem to be shiny as if being used. Now I'm going to try to post a pic to help out. If any ideas please let me known. https://photos.app.goo.gl/cBxM2vTBg9BaQ6sJ7

Max, I believe that may be the connector for the automatic transmission overdrive relay harness. You'll not find its mate in your car unless someone did a conversion on it.
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Art Benstein near Baltimore

“Music is enough for a lifetime, but a lifetime is not enough for music.” - Sergei Rachmaninov

Thanks Art, never noticed it before but that makes sense. It's a manual tranny and no conversion. I've exhausted looking in the Volvo bible so I'm taking your advice and going with auto tranny light socket. Sorry for delay, it been unreal around here for the last few weeks. Can't go back to working on it for a few more weeks but I'll keep you updated. Thanks again.