hmm, you might take a look at the wiring diagram in the wiki, lots of times the lighting and ignition coil are grounded to the plate thereby to each other...take everthing apart and test individually. Coils are most likely good unless damaged. Id suspect, points, coil/coil wire, end cap, plug gap, fouled plug, kill switch, grounds, etc. befor f up internal coil, especially on a honda.