W123

Sometimes when I turn the key nothing happens for asecond or until I wiggle the key a little. Most recently the turn of the did nothing except turn on dash ligts and accesories. After waiting 15 min or so it turned over instantly. Is my tumbler the likely cause or should I be looking elsewhere?

I have a 1982 300TDT. My fuse for circuit 1 keeps blowing. I have the correct color fuse installed as per the fuse box specification.

Over a year and a half ago this started happening. Up until now I could just replace the fuse and it would be fine for several months, so I just let it go.

Now, however, it blows immediately as soon as ignition switch or lights are turned on.

When this blows I lose my dash lights, right rear taillight and right marker light. It basically means I can't safely drive it at night until I get the problem taken care of. The turn signals still work, by the way, if that somehow helps to diagnose the problem.