now solder the pigtails to the metal of the brush holder, your solder joins should look nice and shiny, not dull and shit like this. I think there was contamination from the last time i did this, still seems to work fine but could cause problems in the future.
now you can put the brush holder back on the alternator, I used a strip of copper like so to compress the brush springs so the brushes would slide into place easily, otherwise it would have been hard to get them back on and might have chipped the brushes.
when the brush holder is all the way on screw down the terminals and pull out the strip, instead what I did here.
put the alternator back together
Voltage with engine off
Voltage with engine on, fixed!
The voltage regulator is very easy to replace too, and looks like it would be a common part across a lot of toyotas by looking at parts and catalogs, dunno what the symptoms of a dud regulator are, apart from too high battery voltage or not charging, its easy enough to have a look and see if you have brush contact and decide if the reg is stuffed though.
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