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rockford fosgate dual isolator alternator

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=82115
Printed Date: May 10, 2025 at 12:30 AM


Topic: rockford fosgate dual isolator alternator

Posted By: derrickg
Subject: rockford fosgate dual isolator alternator
Date Posted: August 27, 2006 at 10:19 AM

i just got this alternator it is a 200amp unit it has a external voltage regulator and 2 terminals on top for the battery. i am using 2 batterys in my system should i leave the bridge bar between the 2 batt posts on top or remove it and run battery cables to each one .and do i have to fuse the battery outputs if so what size fuse.



Replies:

Posted By: Custom_Jim
Date Posted: August 27, 2006 at 8:33 PM

The dual output posts can be left seperate with one going to each battery or you can leave the jumper in place and run a single larger size wire to both batteries if they are next to each other. I would see if the external regulator has dual voltage sensing wires. If so I would find out if any one particular one or both need to be connected to the battery. My opinion is if I had both batteries next to each other, they were the same type, brand, and purchased as a pair and I would not allow the batteries to get to low to where I couldn't restart the engine and I wanted to run one larger gauge wire instead of two seperate more expensive runs of wire, then I would run it with the jumper. 

Jim



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1968 Chevy II Nova Garage Find 2012
1973 Nova Custom
1974 Spirit of America Nova
1973 Nova Pro-Street


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