Yes and that was due to bad installation. I
have had 3 car stereos installed on my 98 RAV4 through Best Buy and never had
battery problems. I even had 2 amps installed as well but the installers had to
make me buy this 200-dollar thing that would not drain the battery.
If you are getting a drain through the
radio's power supply it could eventually drain down the battery if it was
improperly installed, I would pull the fuse for the radio and see if the drain
continues, if the drain does not stop there is another short somewhere. To
learn more :
http://www.xcardiag.com/wholesale/automotive-battery-analyser-vat-560-tool-536.html
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