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car battery died after aftermarket stereo

  #1  
Old 04-22-2015, 09:35 AM
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Default car battery died after aftermarket stereo

hello, i recently made a thread on my monte carlo ss 2002, my battery kept dying after i had an aftermarket stereo installed with an amp and sub. I never bought a wiring kit for the car, i just cut the wires and spliced them together. I thought i fixed the problem after hookin up the ignition wire from my stereo to my A/C Fan fuse. My amp and stereo shuts off when i turn the car off. but my battery still died after not using the car for a day. any ideas? should i just buy the wiring kit ? is it the security or something with the car? im so confused. if the stereo and amp shuts off with the car. how is it still having consent power.

thanks guys!!
 
  #2  
Old 04-22-2015, 10:01 AM
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Something is still drawing power. I would not have hooked the Power or Memory from the Stereo to any Major System in the car. I would use the power seats hot line. But I would use the Aux wire that was connected to the original stereo. (If I want it to go off with the key) or directly to the battery if I wanted it to go on without the key.
Are you 100% sure the Amp turns off?
What I would do to troubleshoot the problem is put a multimeter between the negetive battery terminal and the negative battery cable. Set the meter to Amps or Current (which ever the meter says) and then disconnect the things that were installed right before the problem started. With the key in the off position you should read 0 Amps. (Make sure your doors are closed so the dome lights aren't on)
 
  #3  
Old 04-22-2015, 10:07 AM
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the light turns off on the amp when i turn the key.


edit: if i buy a wiring kit/harness for my car to my stereo would it eliminate all the problems?
 
  #4  
Old 04-22-2015, 10:32 AM
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It could be your hook up to the A/C Fuse, or it could be one of the wires you cut from the original harness! Checking the current draw at the battery and disconnecting what you installed to find it is your best bet in my opinion!
 
  #5  
Old 04-22-2015, 10:34 AM
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ok thanks man i will look into it
 
  #6  
Old 04-23-2015, 03:32 PM
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  #7  
Old 04-24-2015, 12:45 PM
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I'm not sure what adaptor to buy but there are threads on the subject. There are also some YouTube videos. I jerry rigged mine using most of the wires from the original harness. Just the rear speakers are connected directly to the Head unit! I got the GM wire color codes online. And I wired the head unit to have power all the time. I just have to remember to turn it off when I get out of the car!
 
  #8  
Old 04-24-2015, 06:48 PM
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When i first hooked it up, and after it was all done, it would do a no crank no start. i would turn it to try and start it, it wouldnt turn over or even turn my gauges on, but the battery wasnt dead or low at all. i figured it was the security anti theft system. so my friend messed with the wires behind the deck and it finally turned over and would start....,my question is, could that be it? he did connect something to make it turn on aand stay on all the time? was i supposed to reset the security passkey code when it did that before the wires were messed with to make it start?
 
  #9  
Old 04-24-2015, 08:06 PM
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Pull up "(your year) Chevy Monte Carlo stereo wiring" in your browser!
 
  #10  
Old 04-25-2015, 10:48 AM
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so from what youre saying and what im putting together is that you and me are on the same page. and im jus not "shutting my power off after i get out" ? lol well how do i go about on fixing the problem? buy the harness? or re wire it to not get constant power... if possible?


and

Originally Posted by JC Colon View Post
Pull up "(your year) Chevy Monte Carlo stereo wiring" in your browser!
I have a 2002 Monte Carlo SS 3.8L . I looked up the wiring diagram 100 times.
 

Last edited by r00t; 04-25-2015 at 10:51 AM.
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