I have a 1991 560SEL.

Behind my instrument cluster, I have the wires shown in the attached image. I'm hoping someone can help identify them. I believe this is the main power to the speedo unit. The set on the left was attached to the round speedometer input. The thick black wire was plugged in and the green wire was just hanging loose. The wire on the right has exactly the same end as the wire plugged into the speedometer but wasn't attached to anything. Does anyone know why there would be two wires with the same end? And what is the green wire? Should they be connected to one another? Although they fit together, it doesn't look right.

Any info would be appreciated.

Thanks!

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