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PLEASE HELP! Did big 3 and now battery is dead!


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Good point if u left the doors open while doing big 3 depending on how long it took could have drained the battery. Everything good now trucks starts ok?

As of last night after I got the agm installed, yes. Haven't been out this morning yet. But the battery was disconnected while I did the big 3, so that's another weird thing for me.

But as long as everything looks good this morning/today, I'm going to pop a fuse back in my upgraded 1/0, if any issues arise after that I know I screwed something up. But by inspecting everything multiple times now I don't see how I could have screwed anything up. Unless the stock battery to alt positive has an in line diode?

Edit:

Went out and checked, battery is sitting at 12.49, it was 12.62 before I went to bed. Started just fine.

Vehicle: 2014 GMC Sierra 2500HD WT

Head Unit: Pioneer DEH-

Mids/Highs: Focal Integration ISC 165’s (front) 

Subs/Amps: TBD

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