Allright, i found US version of wiring in service manual, but without the colors, them i have from other schematic diagrams (that i have without connector pinout, but with colours), i combined them and voila this is the wiring of window main switch. It looks like it is ok, you have 2 wires more than was in those two schematics, so i dont know what they are for.
The most deformed pins i see - black, yellow with black, white with green (all three in a row).
Two of them - Yellow/Black + White/Green are the relay outputs to driver window. (marked N and P in schematics).
So it looks like the deformation make all the bad contacts and problems like heat and melting the plastics. Try to clean it and deform back to normal position of others.
May be that the only thing that is causing those concrete pins to melt - driver window is the most used. The third pin in the row is ground (black). And there may be pretty high temperatures in summer.