Hi how would you hook up a dual battery set up.? i have two optimun batterys in my 77cj-7 i have a ramsey12500lbs winch. a H.E.I dist. 304v8 3speed. no extra lights on the cj. a electric fan. do you run them parralle? put a switch inbetween them?
Google it. There's basic ways to do it with solenoids or isolators and there are also higher tech methods from Painless & Hellroaring that allow you more control. I have the Hellroaring setup in my CJ-7 and will probably do the same on my Scrambler when I get to that point.
'86 CJ-7 Laredo: 4.2,T-999,D300,D30/D44,'94 YJ tub, full cage, Shrockworks rockers, OYR corners, AC,cruise,restored seats,3 tops,2.5" Superlift,F-T shackle reversal, RS9000x's,35" Dunlop Mud Rovers.
'83 Scrambler: time & money pit under construction with parts from CJ's,YJ's,TJ's,FSJ's,GM,Ford,IH,Honda,Toyota and a whole lotta aftermarket & custom stuff. http://www.jeepskate.net
my friend 'skate is right... that is a mega-question with many possible options. i chose not to use the blue box isolator set up ( a la kragens...checker, etc...) and went with a simple OEM ford style solenoid between the batteries. crude? yes. not efficient? yes. but have i ever suffered a let down winching many foos out of harms way? never...
best way is to research it and do it the way you want. i have my battery in the engine compartment running engine and accessories and my rear battery running the winch and also going to a power board so that if i ever get stuff that needs power ill just run the positave there to keep it cleaner. and also i have another solenoid hooked up to a dash switch that connects the two battery circuits so if my front battery dies, flip the switch and hopefully i should have enough power to get it to crank over. but luckly i havent had to use it but considering both batteries less that 6 months old, i wont have to for a while.