getgcs Posted July 11, 2013 Report Share Posted July 11, 2013 I installed the big 3 and I also installed the jl battery terminals and my deck still reads 13.2 volts when Idle and 13.6 volts when at 2,000 rpm on highway. Could my battery or alternator be dying even though they are both only a year old? Link to comment Share on other sites More sharing options...
REVOofRustler Posted July 11, 2013 Report Share Posted July 11, 2013 The Big 3 isn't supposed to raise your voltage. It's supposed to help the electrical system be more efficient which will help it maintain voltage when it's under a heavy load. Did you check your voltage drop before and after you did it? 2002 Dodge Dakota 4.7 club cab - Sold 2004 Audi S4 Avant - Fi and Crescendo - Stock Bose System - http://www.stevemeadedesigns.com/board/topic/147725-2002-dodge-dakota-end-of-the-road/?hl=%202002%20%20dakota 136.4 Sealed @ 29hz 137.0 Drivers window open @ 26hz Link to comment Share on other sites More sharing options...
Smoove Posted July 11, 2013 Report Share Posted July 11, 2013 could the cars computer controlling the amount of charge? Also did you fuse between the alt and battery? 2 Team Fi 15's v1 2 DD M5's 970amps of Alt 6th order blowthroughThe truck Blowthrough build : http://www.stevemeadedesigns.com/board/topic/155555-smooves-1996-chevy-ext-cab-c1500-slow-build/The 350z build : http://www.stevemeadedesigns.com/board/topic/170694-smooves-2003-nissan-350z/ My FB page https://www.facebook.com/pages/Smooves-Car-Audio-and-performance/719746144805343 Team Fi Audio http://www.ficaraudio.com/ Link to comment Share on other sites More sharing options...
getgcs Posted July 11, 2013 Author Report Share Posted July 11, 2013 . Link to comment Share on other sites More sharing options...
getgcs Posted July 11, 2013 Author Report Share Posted July 11, 2013 I did not realize it doesnt provide more voltage I thought because of the increase in wire it would increase the road of electricity which might increase the voltage but either way this helps to know that it will simply prevent a voltage drop more effectivley than not having a big 3. Now to answer your question, Before I did it the voltage drop was the same but a little less.. thats why it is confusing before the big 3 install the voltage was 14.0v at 2k rpm and 13.2v with heavy load and now it is about 13.6v at 2krpm and 12.8v at 2k rpm with heavy load. So its like I lost voltage from the upgrade.. or the battery or alternator might be dying.. hopefully thats not confusing to read Link to comment Share on other sites More sharing options...
getgcs Posted July 11, 2013 Author Report Share Posted July 11, 2013 . Link to comment Share on other sites More sharing options...
getgcs Posted July 11, 2013 Author Report Share Posted July 11, 2013 could the cars computer controlling the amount of charge? Also did you fuse between the alt and battery? I did not fuse between the alt and the battery... I fused after the battery and before the equipment...you said the cars computer might prevent the voltage?... I have no idea but it better not that would be terrible I fix computers for people not for cars Link to comment Share on other sites More sharing options...
Tarball Posted July 11, 2013 Report Share Posted July 11, 2013 sounds like you have added resistance somewhere in your big 3. How did you terminate your wire ends and what wire are you using ? Did you remove stock wires or add to them ? CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
Smoove Posted July 11, 2013 Report Share Posted July 11, 2013 what are you using to measure voltage? and what are you running for amps? 2 Team Fi 15's v1 2 DD M5's 970amps of Alt 6th order blowthroughThe truck Blowthrough build : http://www.stevemeadedesigns.com/board/topic/155555-smooves-1996-chevy-ext-cab-c1500-slow-build/The 350z build : http://www.stevemeadedesigns.com/board/topic/170694-smooves-2003-nissan-350z/ My FB page https://www.facebook.com/pages/Smooves-Car-Audio-and-performance/719746144805343 Team Fi Audio http://www.ficaraudio.com/ Link to comment Share on other sites More sharing options...
purplesyrup Posted July 11, 2013 Report Share Posted July 11, 2013 could the cars computer controlling the amount of charge? Also did you fuse between the alt and battery? I did not fuse between the alt and the battery... I fused after the battery and before the equipment...you said the cars computer might prevent the voltage?... I have no idea but it better not that would be terrible I fix computers for people not for cars most modern day cars computers regulate the voltage, When i start my car, i run at 14.1, after a wwhile driving, and it gets hot it goes to 13.6, then after driving for 3-4 hours through out the day, and its really hot outside, like 90+ degrees, it goes to 13.2 Link to comment Share on other sites More sharing options...
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