dual battery setup kit
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=102886
Printed Date: July 15, 2025 at 1:21 AM
Topic: dual battery setup kit
Posted By: choover567
Subject: dual battery setup kit
Date Posted: March 08, 2008 at 1:54 AM
Im about to wire my second battery in with a battery isolator, where can i wire the battery isolater power(turnon) terminal to, its supposed to be to the ignition i think. Couldnt i wire it to the alternator? So then current is flowing while i have the car turned on, but when the car isnt on and just the key is in i am just running off the second battery? Or is wiring it to the ignition basically doing the same thing? If so where is the wire from the alternator, or the wire from the ignition i need to wire it too. Im all confused. Thanks
Chris
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Chris - 97 Toyota 4Runner
Alpine CDA-9884
Kicker SX1250.1
Kicker 15" L7
Replies:
Posted By: haemphyst
Date Posted: March 08, 2008 at 11:38 AM
Forget the isolator altogether. You will be replacing batteries faster and more often with it. Simply parallel the batteries, positive post to positive post, ground 'em both to the chassis. Connect amplifier distribution to the rear battery. Done.
Here's a thread... I don't want to type it again. Isolators are bad, mmkay? ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: choover567
Date Posted: March 08, 2008 at 12:21 PM
alright cool, ill just do that. easier anyways. now i understand i need the same batteries? or should i go red top yellow top? two red top? two yellow top? rofl.... ??? =)
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Chris - 97 Toyota 4Runner
Alpine CDA-9884
Kicker SX1250.1
Kicker 15" L7
Posted By: elmore4030
Date Posted: March 09, 2008 at 1:35 AM
I would go with two yellow top,but I am sure people will disagree with me ,but that is what they are design for ,heavy audio use.
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Pioneer DEH-P960MP+Multi-CD Player Rockfordfosgate 225.2
Rockfordfosgate T8004 Rockfordfosgate 2 T110D2 InFinity Reference Components 2 sets of 6000cs 2 sets 6800cs
Posted By: haemphyst
Date Posted: March 10, 2008 at 12:19 AM
elmore4030 wrote:
I would go with two yellow top,but I am sure people will disagree with me ,but that is what they are design for ,heavy audio use.
Dude... you JUST asked yourself which battery to use, like... last week. How can you POSSIBLY have any input here? I'm sorry, but, geez... ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
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