W115, Body

My 115 300D (1976) keeps blowing the #4 fuse in the main fuse box. I don't know that much about the electrical system. Can anybody tell me what I should do to fix this problem? Thanks in advance. Marc

I don't know if this new problem I've found has a direct link to the ongoing problems of the car not starting under any circumstances, but this morning I noticed that everytime I turn the key to position 2, fuse #4 (8 amp) in my main fuse box blows. It supposedly is linked to horn, emission control, carburetor heater (n/a), delay switch, and turn signal lamp. Also, when I hit the hazard lights, fuse # 1 blows. It goes to the warning buzzer, auto. antenna, trunk lamp, reading lamp, clock, rooflamp, hazard warning lights(l/r)and the fuel supply shut off valve.

I'm trying to find undersize rod bearings for a 1976 240D I just picked up. Seems to be pretty easy to find standards but that's it. Is it possible to return a crank journal to the standard size if the bearings aren't available? The engine was totally rebuilt a few years ago but... kid driving, hole punched in oil pan, ran out of oil and that's it.