Did you ever find out why the OVP fuse blew? Did the ABS light come on right after you replaced the fuse? Have you dis-connected the battery and reconnected it? There are 3 speed sensors for the ABS system, one at each front wheel and one at the final drive. If you have an OHM meter you could test those (I think I remember reading 1500 ohms for the front and 700 at the rear).
I'm also new to MBZ and this forum is GREAT!!! Someone the really knows will probably chime in.

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1993 190E 2.6 135k
1989 Ford Thunderbird SC 5 Spd 79K