if u have 1 batt ur just relocating it u dont need a isolator
the alt puts out 14.4vdc w 80 amps so
a red top and atruck batt w a 3farad cap works grat
i havent had trouble yet and i ve run it this way in all my s13
this is my 4th one
see i also add a cable to the alt
i jump it to the pos...