No, that will not fit, for 2 reasons:
1) That is the late-style connector which only fits 94-up / facelift E500's, and IIRC you have a 1992 500E.
2) That part number is for an R129 which has a shorter cable.
You can buy the early cable and install it on that ETA but this would require more work.
Also... if the datecode is 1992-1996 on that ETA, it's very likely DOA. I can't read the label in the photo but it appears to be 92-96 vintage.