Does anyone know what this random connector goes to? Its near the HVAC assembly under the passenger side kick panel on an 86 300SDL.

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speaker? it looks like a speaker wire connector

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1980 N/A 300D with 240d ACC and sanden unit, 281k miles, has a 617.951 turbo motor installed and a 4 speed standard in its future.

I say that with a 99% confidence level.

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84 300SD
85 380SE
83 528e
95 318ic