1985 Mercedes-Benz 190E Power Seats

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So I just purchased a 1985 Mercedes-Benz 190E about 1 week ago. The previous owner told me that the power seats need work among some other things like the sunroof. So I figured to start with a power seat relay. I searched online for the location for the power seat relay, hoping that would fix the issue and then I would have power seats that work, but the spot for the power seat relay is missing. Meaning there is no place to plug it into. Can someone please help me.

If there is anybody in Tampa Bay Area of Florida, that would be even more helpful, as I don't understand this car at all. Its my first 190e