Hi and welcome to VxON. Unfortunately this area is only for introductions so I am moving it to the correct forum. Btw if your alternator is not charging then why not buy a recon from a motor factors and fit that?
i've been wrestling with my hitachi alt for a long time, latest finding is that a blip on the revs can 'wake it up' to charge and also reign it back in from overcharging.
scary thing was that it was brand new and i've gone through all the electrics and relays with out any more clues, i am either unlucky with electrics or hitachi make crap units.
is there an alternative to hitch for there cars?