Coil Wiring

Tried to fire up the bugeye after four years (is that a record for a 
slow engine rebuild?), didn't work.

No spark, and the coil was getting hot to the touch.

Does polarity on the coil matter?  Since the car has been switched to 
negative ground, do I need to wire it differently than the wiring 
diagram?  (Note, I also replaced the wiring harness, thus the reason the 
coil got un-wired.)

Thanks for any help.

Chas Douglass