I kind of figured the line switch must be the switchhook but there is a med. blue and darker blue set of wires coming from the switchhook and terminates on #8 and #16. I still am confused about about the manufacture date. There is no refurbishing sticker on the back, just a stenciled date. The network is from 1981 as well but the dial is from 1974. So is this manufactured in 1974 and refurbished in 1981, or was it manufactured in 1981 but someone put a 1974 dial in it? That's partly why I asked you about the dial too. Could someone have put the wrong type of dial in it? Unlikely but a possibility? Bottom line: would you move the green lead from #8 to #16?

Bill