Ya I would stay away from the dual alternators if it were me. An upgraded alternator and an isolator and two GOOD batteries would be a better, no hassle setup. Remember, a 130, 150 whatever amp alternator doesnt put out that amperage all the time. It simply has that capability.....as needed just like a 400hp 68 Mustang Fastback wont be putting out 400hp cruising down the road at 15mph. Bigger(amperage) can never be bad.(thats what she said)
If you do dual alternators I would wire the lights through a relay of course but also have that same relay trigger another relay to excite the alternator as well if you are not going 1wire.
your thinking too hard, its much simpler than that
it can share the same battery/batteries, just hook the excitor wire to a switch on the dash
so dont knock it till youve done it.
cost of my dual alternator setup FREE from parts i had laying around
how much for a 150 amp alternator?? most START at $1 per amp
I could see me kicking on the lights and forgetting to do the same for the alternator.
you'll remember when it dies in the middle of the trail
