i have an extra red top sitting around and have a tendency to drain the battery in the red cj. i was thinking about adding it as a second one. the question is should i use an isolator, just use a starter relay to engage the second one if i ever need it or just wire them together (obviously not 24 volt). is anyone running dual batteries. currently i have a good stock alternator but am planning on swaying in a cs144 when i get the incling and decide to figure out what i need to do to swap from gm 2 wire to 3 wire( i already have the pigtail).
as far as electrical draw i have winches front and rear, tbi efi, stereo, 4 kc lights and am about to swap in a taurus fan