papoose42 Posted December 18, 2010 Report Share Posted December 18, 2010 Hey I am wiring my car up for my new system, I am running power wire from the battery to a battery isolator then to two batteries, then to my sub amp and my speaker amp. Do i also need to run one amp from one battery and one from another or both off the second battery. Also wondering about if i have to fuse my ground wire or no. And just a power wire from the front to back battery or run a 2nd wire from the alt to the back of the car. Quote Link to comment Share on other sites More sharing options...
Guest Posted December 18, 2010 Report Share Posted December 18, 2010 take isolator out if you would like to have an alternator still working in the future. you dont fuse your ground take a run of 1/0 from front battery (after doing big 3 in 1/0 gauge) and attach it to the back battery. if you have multiple back batteries, attach + from one to + on the other and etc for -. Quote Link to comment Share on other sites More sharing options...
papoose42 Posted December 18, 2010 Author Report Share Posted December 18, 2010 ok well i was told to run an isolator to prevent battery drain while the car is off Quote Link to comment Share on other sites More sharing options...
Z71 Thumper Posted December 18, 2010 Report Share Posted December 18, 2010 I got a question too lol how do u use a relay my deck some times turnes off and people are telling me to use a relay but the only problem is I don't know how to wire up a relay and don't know what wires to put on either prongs Quote <script language='JavaScript' src='http://www.rockfordfosgate.com/downloads/banner_link.asp?p_id=18'></script> Link to comment Share on other sites More sharing options...
n8ball2013 Posted December 18, 2010 Report Share Posted December 18, 2010 how often do you listen to your car with the car off? I never do personally. z71thumper. there are diagrams on the12volt.com on how to wire it up. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
Z71 Thumper Posted December 18, 2010 Report Share Posted December 18, 2010 I never do neither just when ever I'm driving or when I watch a movie and it happens with all my cars I put all the same radios the kvt 514 kenwood Quote <script language='JavaScript' src='http://www.rockfordfosgate.com/downloads/banner_link.asp?p_id=18'></script> Link to comment Share on other sites More sharing options...
Z71 Thumper Posted December 18, 2010 Report Share Posted December 18, 2010 Cool thanks Quote <script language='JavaScript' src='http://www.rockfordfosgate.com/downloads/banner_link.asp?p_id=18'></script> Link to comment Share on other sites More sharing options...
Superjay Posted December 18, 2010 Report Share Posted December 18, 2010 with a back battery you'll need to fuse both sides of that front to back run... Quote Principal JTech Consulting - Leader in 12-Volt Training and Product PlanningIt's not about how much power you have, but how well you use it Link to comment Share on other sites More sharing options...
Z71 Thumper Posted December 18, 2010 Report Share Posted December 18, 2010 Do I run the positive to other battery or to alternator And the negative side just to metal? Quote <script language='JavaScript' src='http://www.rockfordfosgate.com/downloads/banner_link.asp?p_id=18'></script> Link to comment Share on other sites More sharing options...
Superjay Posted December 18, 2010 Report Share Posted December 18, 2010 positive usually goes from battery to battery. Fuse within 12 inches of EACH battery. If the wire shorts and you only have the front fused the back battery is still hot, and will continue to feed massive amounts of current to the frame. Ground to the chassis. If you cannot find a spot where the resistance to the front battery is less than 0.4-ohm then run a negative from the front battery also. Quote Principal JTech Consulting - Leader in 12-Volt Training and Product PlanningIt's not about how much power you have, but how well you use it Link to comment Share on other sites More sharing options...
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