Its best to get a higher output alt. But stock will be fine! The stocks put out 70-90amps. You can get up to 140amps. Thats what I have! Just hook up the two pos. and two neg. (ground) together. That keeps you at 12v and your set. I have 1red top optima and 1 yellow top(thats under the bed on its side). I would recommend 2 yellow tops. They can provide a hell of alot more juce than stocks and more than the red tops. An Isolator would be a good Idea so You never run the battery down to where you cant start, but With my setup I ran the radio for 15hrs and started up perfectly fine. With subs and all, along with other accorys hooked up too.

 

He told me that and I thought that too.

But, I swear on my life that I traced that positive wire, from the secondary battery on the driver side, as it runs right on top of the intercooler straight to the three way tee on top of the primary battery on the passenger side.

It was parallel, it wasn't something that I took a picture off, but if I catch him before he leaves for Texas I wiil take a picture.

It was this setup that inspired me. I can't see how it produces 24v with a positive wire going between both positive posts. Belive me I spent some time looking at it.

That would double the cranking amps, probably all it needs, but it was in parallel, not in series.

 

I have two yellow top optima batteries wired parallel right next to each other, turnedthe batterysideway and straped both of them in my battery tray, its was pricey(500) but worth it. i can sit in traffic with my 3000 watt stereo(no cap)going full blast eletric fans running and my a/c on high and have no problem with voltage. And i never have to worry about leaving my lights on.

 

If you decided to run to batteries in parallel, make sure you buys 2 BRAND NEW batteries of the same brand, group and size. The problem with running 2 batts without the isolator is that if one battery shorts out some time in its life (gel batteries you shouldn't have this problem) then it will pretty much kill the other battery as well and instead of having to replace 1, you will have to replace 2. I would run them isolated with one powierng your sounds system and the other working for the rest of your truck. Your alternator should be able to keep up with that.

 

the batteries i have are an eliminator from canadian tire and an ac delco one. where can i get this isolater?

 

Actually, you should just try putting one optima red top or yellow top in and see if it has enough to feed your system.