I have discovered there are significant differences between Carls drawing and my 98 EV, I'm sure Carl's drawing is correct for many 98s and later bikes
Mine has a P8 ECU, Carl shows a 15M
Here is a sketch to show the differences around the ignition switch and fuses
Heres a sketch of the fuses and relays of the earlier 98s like mine
I did a "Startus Interuptus" fix on mine the other day powering the Start relay more directly from the battery by-passing the ignition switch, heres a sketch that shows the changes.
I had to remove the Headlight relay feed from the Start relay, it no longer turns off while cranking. I doubt this is an issue but If so it would be quite easy to fix.
I also added a main fuse to protect the switch and previously unfused wiring.
I am pleased to report the bike cranking has improved, even with less than 12 Volts in the battery it was able to crank and start.
If someone wishes to do the same fix they should first of all determine which wiring they have. It's probably safe to assume it's like mine if it has a P8 ECU.