I was just looking over the engine of my 1986 190e 2.3, when I noticed that my fuse box seems to be missing a fuse...... well, it's a little bigger then a fuse. It looks like some kind of outlet for a relay of some sort. I will try to include a picture of the missing fuse eventually. I think it is the overvoltage protection relay, if my haynes auto repair manual is correct? Is this vital to the operation of may car? If it is, I am going to kill the guy I bought the car from.

Thanks in advance
Peter V.

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1986 Mercedes 190e 2.3