'92 ej22 Alternator

EJ22Ute · Post by **EJ22Ute** » Fri Dec 16, 2005 5:47 pm

I have installed a dual battery isolator but main battery is now not being charged.
Instructions mention if the alternator requires external excitation voltage then the battery isolator needs a modification.Apparently internal diodes in the isolator block the external excitation voltage to the alternator.
Does anyone know if the ej22 Hitachi alternator requires this external excitation voltage to operate normally?

steve_rising_sun · Post by **steve_rising_sun** » Sat Dec 24, 2005 8:45 am

Lib alt requires a ign reference voltage same as L series.
Steve

EJ22Ute · Post by **EJ22Ute** » Sat Dec 24, 2005 11:52 am

thanks, have now wired in a relay which charges both batteries