I am looking for a circuit board miller # 123375 it is the small square one screwed into the front of the  machine. It has a single plug that is quite wide on the bottom. The plug takes 10 or more pins and clips on. If you have one on an old junk big 40 or big 50 from 1985 to 1989 I would like the plug and board. Please do not try to unclip the plug as it will most likely break. So if you have a junker I would like the wires cut back as far as possible. Let me know what you have. As I said it was only on the big 40`s and big 50`s with constant voltage from 1985 to 1989. Direct from the factory or a field add on kit called CV2.