How to hook up two batteries


Silver Member
Username: Drpthemc

Atlanta, GA USA

Post Number: 110
Registered: Apr-05
thanks to those who helped in my last thread i got everything worked out... well my plan now is to have 2 batteries... one in the front and one in the trunk... how would i wire this?...

my plan:
1. Use exisiting power wire that is already hooked up to the front battery and hook it up to the battery thats going to be in the trunk.
2. Get a ground wire and ground it to a secure place in the trunk (ex. same place as amp ground)
3. Get another power wire and run it to the amp.

-hope u guys can understand...

Is that ok? hopefully yes if not then help thanks...

Gold Member
Username: Carguy

Post Number: 4910
Registered: Nov-04
You need battery isolator. Get one that'll match your HO alternator/current draw.
For example, if you're planning on using 170A of current, then you will need 170A isolator.
Price will vary depending on that.
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