check the wires from the alternator again as far back as you can cause the wires always break pull on them and you find it will break easly thats what i have come a cross before.or you can use a multimeter to test wiring there is black box behind n.s.headlight with a 10mm bolt through it split it that is where you can test the wire from there to the plug at alterntor end.
steve
October 2008