hello i think you are refering to the transformer over temp. if the plug is labelled p6 ( p for plug ) it mates with r6 ( r for receptacle ).
if you look you should find r6 with all the other 'sockets'. they are marked on the board alongside each one. what drawing number is your machine wired to?
the number is on the silver plate on the outside of the electrical cabinet and will start 9120****.