Any link to where I can find that diagram? I can't find it on the wiring diagram threadAs far as I know, your bike doesn't come with a condenser as they were only used on the points system. Yours is electronic ignition and uses a capacitor. The turn signal relay, however is important as you won't have working turn signals and will not pass your safety inspection without them.
You should be looking at the wiring diagram for an xs400SH. I think you were looking at a pre-1980s diagram.
Also, I've got a female connector dangling. ...... I'll post a picture after work (yes I'm doing this at work)
love to see your female connector dangling, in fact we all do