Here's one of several threads about the Model Six recap from Audiokarma. That's where I got the info to redo my Seventeens. There may even be a wiring diagram in one of those threads. I used regular Dayton poly caps.
http://audiokarma.org/forums/index.php?threads/klh-model-six-recap.104118/
http://audiokarma.org/forums/index.php?threads/klh-model-six-recap.104118/