GM 1 wire alternator questions

[bushhog750]

im wanting to add 2 batteries to my 1994 wrangler crawler. it has a fuel injected 350 with gm 1 wire alternator. what im looking to do is run everything from 1 battery and have 1 battery just for the starter. im wanting to be able to run 1 battery completely dead if i want and have the other battery to start the vehicle. this way im never stranded with a dead battery from playing the radio to long or having the rock lights turned on w/o the vehicle running. is there a way to do this and still have the alternator charge both batteries at the same time thanks in advance.

[guidolyons]

yes.
You need a battery isolator or a switch to select which battery is being charged (or both).

http://www.pirate4x4.com/tech/billavista/dual_battery/my_dual_battery_setup.htm

[bushhog750]

thanks. i have looked at these but wasnt sure if i could do something different being the charging circuit was so simple. but the more i thought about it the more i started confusing myself. thanks for the info man i appreciate it.

[guidolyons]

Check with Seabass44 (12voltguy.com) he has a dual battery switch panel as well. His stuff is :grinpimp:

http://12voltguy.com/web/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=24&category_id=10&option=com_virtuemart&Itemid=43

466454

You can also get dual battery isolators at pepboys, etc