In Reply to: Positive Ground Location posted by Tony Sanchez (OR) on January 02, 2018 at 19:54:34:
To answer your initial inquiry, I believe that after serial number *9N-12500* the battery ground strap bolted to the rear hood to dash bolt which is 5/16". earlier 9N straps fastened to the air cleaner with a 7/16 bolt, I think, I'd have to look at mine. I have new DC battery cables for my early 9N project but haven't got that close yet to installing them. I know some recent early 9N restorers, Steve Dabrowski for one, have run into issues with the battery cables. There may be some info in the archives here.