If it is German, they use 380 V 3 phase power in their stoves. The four wires should be 3 phases and safety earth (no neutral).
The burners are powered phase to phase. If the unit is intended for European domestic use, you will need 3 phase power to make it
work, as each element requires 400 V to function.
Steve

"robobass" wrote in message
...
Hello Guys!
My current cooktop has a big crack. My wife literally found a pristine
ceramic cooktop on the street. I tried to install it - there were four
4-pole plugs which inserted properly into the oven part of the stove -
but when I turn it on, only the outer rings fire up. Compatibility
issues between stoves aside, I'm convinced I can make this work, if
only I can get some info on the wiring scheme. I am in Germany. The
oven/stove control is "Wamsler" The original cooktop is long gone, and
the recent one had it's own "surface" controls, so I can't reverse
engineer like I would like to. I simply can't find any wiring info for
either the stove/oven or the cooktop online. I'm hoping someone here
has expertise, and can give some helpful hints!