Troy Mihalcheon Posted March 3, 2014 Report Share Posted March 3, 2014 I just upgraded my rear battery with a kinetik hc2400, from an hc1800. The rear batt voltage is 12.8 while the vehicle is running, but the front battery is seeing over 14v... any reasons why the rear battery isnt getting the 14v too? Im not sure if the hc1800 was at 14v with the car on... im guessing it wasnt. So, why is there a voltage difference between the front and rear batteries? I have a HO DC power alt so that shouldnt be the issue, the charging voltage is good. Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 3, 2014 Report Share Posted March 3, 2014 Check all fuses, connections, verify grounds are good. ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Guest Posted March 3, 2014 Report Share Posted March 3, 2014 rear battery isn't getting power. either the back battery isn't grounded well, or there is an issue with the positive wiring. either a lug crimp/solder issue, or a fuse holder connector issue. Link to comment Share on other sites More sharing options...
Kyblack76 Posted March 3, 2014 Report Share Posted March 3, 2014 Check all fuses, connections, verify grounds are good. rear battery isn't getting power. either the back battery isn't grounded well, or there is an issue with the positive wiring. either a lug crimp/solder issue, or a fuse holder connector issue. Agree. You have a blown fuse in line to the front to rear. Or a connection issue. EDIT - how many runs do you have front, to the rear bat in question ? SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 3, 2014 Report Share Posted March 3, 2014 Or a ghetto crimp ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Troy Mihalcheon Posted March 3, 2014 Author Report Share Posted March 3, 2014 I have no clue. the fuse is fine. im gunna try with the old 1800 again and check it's charge since I was running with it for a few months with no problem... the amps are bolted at a different point than the rear battery. rear battery ground is bolted to some thick metal underneath the car. it was all working fine just the rear battery voltage is floating or whatever... I checked continuty from the disconnected battery ground wire to one of the amp neg terminals too and it is there so both the grounds are connected to the chassis fine. theres one run of 1/0 connecting the battery +s Link to comment Share on other sites More sharing options...
Kyblack76 Posted March 3, 2014 Report Share Posted March 3, 2014 you only have one fuse on the front to rear run??? not good..... start your vehicle, take your meter, and check voltage at every single "point" down the run. Changing your battery wont do anything. If your battery was dead, you should still see alt charge on it........ SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Karkov Posted March 3, 2014 Report Share Posted March 3, 2014 12.8? That's like resting voltage.... 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
Troy Mihalcheon Posted March 3, 2014 Author Report Share Posted March 3, 2014 It is resting voltage, good eye. The voltage at the end of my + run is 14.4v right to the rear battery. So I guess the only thing it could be is the battery ground? Link to comment Share on other sites More sharing options...
SnowDrifter Posted March 3, 2014 Report Share Posted March 3, 2014 So you're telling me that if you put the positive to the battery positive, and the negative to the ground on your car, it's 14.4. But if you put the negative to the negative post on your battery it's 12.8? ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
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