Look under the "Parts for sale" section for someone parting out one from this era. They can cut the wires and you can splice it in.

Just last week I ripped the same plug out and had a no start situation on my 79 with no clicking. I had been messing with the 12v plug to the cigar lighter and pulled that wire running to the trans out. I replugged it and all is well.

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2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD