Hello Ron, there is a picture of the Connecticut coil in the 1916- 17-18 490 parts book,
Page 96.
Part number H-599. Model G-O. Two primary leads.
In the 1923 Connecticut parts book a coil is shown with part number type 200-1-Y. Type G-O. , and 200-7-Y. Type G-A.
There is a special ignition switch fitted to the dash of 1916 490 with coil units fitted to operate the switch unit correctly, these can be shorted or open circuit and the switching mechanism may not work correctly without electric rewinding of the coil.
I believe others have used the original Connecticut coil and removed the internals and retro fitted a modern coil.
Last edited by jack39rdstr; 01/08/22 09:02 PM.