how to wire an extra battery in my system?

  • Thread starter Thread starter Armin C
  • Start date Start date
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Armin C

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ok i have a very loud subwoofer system n i am wondering how should i wire my second batery to the system so that the batery is being charged by the alt but also not having anything to do with the rest of my car?
 
Not sure what jim is talking about.

All you have to do is run a positive from your main battery to your 2nd battery. Then you can run a negative from your main to your back battery if you want, or just ground off the back battery to a steady ground on your vehicle.+ to + and - to -.

Isolaters are not used in this situation. You can have a wet cell and dry cell combination too. But in my case I used a dry cell battery in the back of my truck, since that is gobs less secure, and I don't want to have to worry about my battery tipping over and leaking acid everywhere.
 
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