MD7786 Posted February 17, 2012 Report Posted February 17, 2012 So I just put in my 2nd yellow top in my trunk and the volts are staying at 11.3 and when bumping drops to 9.5. I haven't done the big 3 yet but will within a week. Will that help? Or is the only thing I can do is get a h.o. alt.? I have the back bat running 0 gauge to my cap then 4 out of cap to amp. Quote
billy101 Posted February 17, 2012 Report Posted February 17, 2012 Get rid of that cap for one..doing nothing but added stress to your charging system, and isn't helping with your voltage issue. What kind of car is this in? What is the factory alternator's amp rating? My guess is that your alternator can't keep up with the added battery and you're depleting the reserve on the batteries and then your voltage is dropping off a cliff. Might be time to invest in a H/O alternator. I did, and haven't been happier. Quote First System 2002 Impala LS 3.8L V6, 128,365k miles. Alternator: DC Power 190Amp H/O Alternator Headunit: Kenwood KDC-BT945U. Speakers: MBQuart 6.5" Comps, 6x9 3-way. Amplifer: Eclipse 3322 on front 6.5 components, and a Infinity Kappa One @ 2ohm- 800w Subwoofers: 2 REAudio SRX12D2 wired to 2 ohm. Box: 3.1cuft box tuned to 33hz. sealed off to cabin Big 3- done with all Knukonceptz KCA 0 gauge. Don't drop below 14.1v at full tilt.
BEEMDUB Posted February 17, 2012 Report Posted February 17, 2012 dude those are horrible numbers, you deff need to get the big 3 done ASAP that is the biggest thing your missing...... Quote
OrionStang Posted February 17, 2012 Report Posted February 17, 2012 How did you wire in the second battery? Is it new? Did you check voltage before installing? Did you charge it before installing? Is this with the engine running? What is the voltage at the front battery? Need info to help. Quote SMD Super Seller My Feedback Thread
Lbox88 Posted February 17, 2012 Report Posted February 17, 2012 (edited) Do you have a battery charger that you can throw on you car? Edited February 17, 2012 by Lbox88 Quote UBL | Build Log
MD7786 Posted February 17, 2012 Author Report Posted February 17, 2012 My front battery is sitting at 13.7 while bumping and 14.2 normal. I ran 0 gauge pos/negative from front to back with double fused on power near each battery. Quote
MD7786 Posted February 17, 2012 Author Report Posted February 17, 2012 (edited) No I didn't charge the back b 4 install cause i was told i didn't need tto on a yellow top. Could I just get a charger and throw it on for a lil bit? Its a 2001 Camry and factory alt is 80 amp. Edited February 17, 2012 by MD7786 Quote
OrionStang Posted February 17, 2012 Report Posted February 17, 2012 Check all the connections at the fuses. Use a dmm to work your way front to back to see where the drop off occurs. Keep the engine running while doing this. Is it a new or used battery? Quote SMD Super Seller My Feedback Thread
MD7786 Posted February 17, 2012 Author Report Posted February 17, 2012 Brand new yyellow top in front and back. Quote
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