Guys I'm having so much troubles and I gotta get this tuned this week

It's. Mark2 jzx81 with power fc

Here's my problem (s)

I have no ignition on my ign wire at the alternator ( fuses ok, I beleive this is the 7.5a engine fuse)

When I earth the light wire it not only brings on the batt light but exhaust temp and brake light warning, but the alternator doest bring on any lights on, if I unplug alternator and check light pin with test light it isn't earthing through the brushes like it should.
(tried two alternators)

Also I have no ignition on the ign pin at the diagnostics plug