ok i been deciding weather or not to run an isolator for when i install my 2 back batteries i heared isolators are usless ..
then i heard that i can run a isolator relay,,which just looks like a solenoid to me any help would be appreciated..
im running a 235 h/o alt//
one yellow top optima in front
an i plan on running too UPS 12-370FR c&d batteries in the back