Re: Battery isolator questions.
^^^^Pretty much sums it up.
To the OP, I have seen different results from running different types of batteries. Some people may not have any issues. There is a good example in the tutorial. I would recommend using voltmeter on the battery and watch the resting voltage (car being off) and see of you notice it staying the same or dropping. You can get a good idea if your front battery is being drained by the rear if you notice in a few weeks that the resting volt that should have started around 13.0 to 12.8 volts starts dropping down to 12.6 to 12.4 and so on after that. The slower the drop in voltage if any at all will mean that it is not draining that battery that much. This can happen even with the same type battery, but the sizes are different. Remember that walmart battery is not meant for rapid charge and discharge. Good luck.
I am from the Old School Audio era. I collect vintage car audio; I have roughly about 40 plus amps, 20 plus subs, dozens of sets of mids, highs and components, 14 eqs/processors, and numerous other old school equipment. I have several old school jewels amongst my collection. I have also collected some nice Japanese and German made audio while I lived in Japan and Germany. I do bring the new school as well with my six Memphis Mojo's, two AudioQue 3500.1D, RF Power 30001BD, Sundownsubs, etc...