I'm learning on the fly with electrical so bear with me.
I had to replace the coils on my 1975 CB750 K5, the points ignition system was replaced by an older Dyna III by the previous owner.
I picked up a set of coils off of a 1979 CB750 but as the Dyna needs at least 3 ohms of resistance and the 79 coils tested at 2.7 ohms I picked up a nifty 1 ohm resistor plate from Hondaman.
I hooked it all up and the bike showed great spark and fired up on all cylinders but then died and I noticed that a fuse had blown. Now this isn't one of the fuses in the fuse-box but one that the previous owner wired in himself and it holds a 20-amp glass fuse.
I've looked all though the bike and haven't found any bad connections or grounds yet although the obvious is that there is a green ground wire sticking out from under the seat (not the main ground connected under the seat but a side one) that has a blade connector on it but isn't attached to anything and I can't find anything that it should attach to. (rigged fuse and disconnected ground wire pictured below)
A couple questions:
With the Dyna ignition and the lower resistance that should only affect the connection in between the coils and the spark-plugs right? I'm going to update the fuse box when I get a chance but that shouldn't be affected by the lower resistance I would imagine.
Also, does anyone know where that ground wire goes and if there doesn't appear to be anywhere to connect it should I just attach a female blade connector and ground it to a good spot on the bike?