afrakes Posted February 9, 2016 Report Share Posted February 9, 2016 So I been doing a bit of wiring the past 2 days. going to be as detailed as possible to try and get an answer here. 04 Chevy blazer, stock alt, lead cell batt. All wire is xs power 1/0 ofc I started YESTERDAY by getting my positive run from batt to alt done (fused w/ 250 amp), power from batt to back (not fused yet, but sky high fuse holder in place because box isn't ready to install yet), upgraded my h/u to pay lc1 rca's, upgraded my remote turn on wire, and wired in an xscorpion volt meter, directly to batt positive/negative inputs (so it stayed on constantly), and called it a day there. TODAY I went out and rewired my volt meter by tapping into the ground/ignition switch from the harness behind my h/u so it would turn on/off with he vehicle. I then started the truck to test that it worked. THIS WAS THE LAST TIME MY TRUCK STARTED ON ITS OWN. I then wired up my amp just to txt that it worked. Then disconnected the battery negative terminal, then put a 200a fuse in the power run going from batt to amp, then reconnected the battery negative. Went to start the truck and got "the dead battery click". I turned the truck to acc to get a reading off my volt meter, and it read 7 volts! I retested at the battery with my dmm and got the same reading! I then turned the truck off, disconnected the battery ground, removed the fuse in the power wire running to the amp, disconnected everything at the amp, reconnected the battery ground and tried to start the truck again. Nothing. I had a buddy jump my truck, after we got the voltage back up we ran/landed both the battery negative run and the engine block negative run. then checked the voltage at the battery with my dmm again and got a steady 12.2 volts. Went in, drank some beer, went out about 2 hrs later to make sure the truck still started, and NOPE! Battery is once again at 7 volts! I'm assuming my battery is dead at this point. Unless you guys have any insight as to something else that could be going on??? I really can't think of anything that could be drawing power from my battery. My mind thinks that the only reason my battery made it this long was because there was enough resistance in the stock wiring to make my battery retain enough voltage to start. But then again, my battery went down to 7 volts before ANY grounds we're upgraded. I'm baffled. Please help. Vehicle: 2014 GMC Sierra 2500HD WT Head Unit: Pioneer DEH- Mids/Highs: Focal Integration ISC 165’s (front) Subs/Amps: TBD Link to comment Share on other sites More sharing options...
OrionStang Posted February 9, 2016 Report Share Posted February 9, 2016 Id try a new/different battery and keep a close eye on the voltage, to rule out drain on it. SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
dolarbilz Posted February 9, 2016 Report Share Posted February 9, 2016 I'm drinking..but maybe your battery was weak.but wiring a constant draw in battery could drain it..your xscorpin volt meter.it could use on/off switch. Link to comment Share on other sites More sharing options...
Skullz Posted February 9, 2016 Report Share Posted February 9, 2016 Get a 12v test light and pull the positive and use the test light while pulling fuses to find the source draining your battery. 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
3vil Posted February 9, 2016 Report Share Posted February 9, 2016 My mind thinks that the only reason my battery made it this long was because there was enough resistance in the stock wiring to make my battery retain enough voltage to start. Your mind is wrong. Any add resistance the factory wiring had would've just impeded the alts ability to recharge the batt. Does your TB have that stupid GM voltage regulating started I often see ppl bitching about? Link to comment Share on other sites More sharing options...
afrakes Posted February 9, 2016 Author Report Share Posted February 9, 2016 My mind thinks that the only reason my battery made it this long was because there was enough resistance in the stock wiring to make my battery retain enough voltage to start.Your mind is wrong. Any add resistance the factory wiring had would've just impeded the alts ability to recharge the batt. Does your TB have that stupid GM voltage regulating started I often see ppl bitching about? Nothing that I have seen. Pretty sure that's just the full size rigs Vehicle: 2014 GMC Sierra 2500HD WT Head Unit: Pioneer DEH- Mids/Highs: Focal Integration ISC 165’s (front) Subs/Amps: TBD Link to comment Share on other sites More sharing options...
afrakes Posted February 9, 2016 Author Report Share Posted February 9, 2016 I'm drinking..but maybe your battery was weak.but wiring a constant draw in battery could drain it..your xscorpin volt meter.it could use on/off switch. Already switched that earlier today, before any issues arised. It's wired to the ignition wire from h/u. And the meter was on all last night with the truck off. Caused no voltage drop at all. Vehicle: 2014 GMC Sierra 2500HD WT Head Unit: Pioneer DEH- Mids/Highs: Focal Integration ISC 165’s (front) Subs/Amps: TBD Link to comment Share on other sites More sharing options...
afrakes Posted February 9, 2016 Author Report Share Posted February 9, 2016 Get a 12v test light and pull the positive and use the test light while pulling fuses to find the source draining your battery. Not sure I understand this process? I only have 2 fuse holders, batt to alt, and batt to rear. Only one is even fused, batt to alt. Vehicle: 2014 GMC Sierra 2500HD WT Head Unit: Pioneer DEH- Mids/Highs: Focal Integration ISC 165’s (front) Subs/Amps: TBD Link to comment Share on other sites More sharing options...
afrakes Posted February 9, 2016 Author Report Share Posted February 9, 2016 Also just read how to test for discharge (how much/if you have issues) with my dmm. So that alone will tell me if my battery is bad or if something I did caused discharge. I guess one could lead to the other though, right? Either way, I want to make sure I NEED a new battery before I sink money I don't have into something new. Can't even get an agm right now , current dead batt is 700 ccas so if I buy new I'm just going to match that. Vehicle: 2014 GMC Sierra 2500HD WT Head Unit: Pioneer DEH- Mids/Highs: Focal Integration ISC 165’s (front) Subs/Amps: TBD Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted February 9, 2016 Report Share Posted February 9, 2016 How old is the battery? I would check the water level in it then put it on charge overnight. Then let it sit for a day disconnected. Then measure voltage. It should stay over 12v at rest. Double check your connections from the battery to the alt. 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
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