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Message: <blockquote data-quote="TreyE" data-source="post: 2840642" data-attributes="member: 567385">nah man...you do need an isolator if youre going to be running a competition with your car off because that will drain both batteries and you wont be able to start your car..get an isolator for the back battery...about hooking it up...run 0ga from front battery + terminal to positive on back battery...then ground the -  battery terminal to your chassis where the battery is...you can then run wires from the back battery to your amps etc...but put an isolator in the line if you are going to be running competitions with the car off...if you dont bump with your car off you will not need one:fro:</blockquote>

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