1996 Volvo 850 GLT identifiying some wires

Hello all, I just recently acquired the above car and have some wires I just can't figure out. My car was in an accident which destroyed the front left headlight assembly, but the headlight and side marker lights were very straight forward as was everything to do with the engine. What is left is the wire/harness that contains the thermometer (the internal digital sensor). This was hanging there and comes from the firewall, branches to the thermometer and then branches twice more to open connectors that weren't connected to anything when I got the car, any thoughts?

The other is that this car has an internal hands free cell/car phone setup, or so it seems, there a speaker I can see and a cell phone mount point. Also there are a fair sized solid red and solid green wire coming from the right hand side of the firewall and running into my fuse box, with leads stuck into the left side of jumper 12 and the right side of jumper 34. All I can figure is something to do with the car phone or something.

I think those are the only things that have me confused for now. Even more so because every power feature inside the car functions fine. The only problems I have are that four ways and the blinkers make a loud electrical buzzing type sound inside the car, I think through the radio speakers. Also all the lights blink slightly in time with the blinkers.

Any links to wiring diagrams or suggested places to get an good service manual are also greatly appreciated,

Thanks alot, Chris Werner

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