what is the best way to find an eletrical draw. The other day i went out to my blazer to fire her up and click click click. now what the #**@ so i pulled the battery and took it to auto zone and had the battery charged and tested and it only had 9 volts left in it. So since the battery was bought january of 06 less almost a year old. I got it warranty replaced. Brought the new one home hooked it up and i could hear my cd changer trying to do something when the key wasnt even in the ignition. So i am getting ahead of myself here. The guy at the counter said to take a test light and clamp onto the pos side of the battery and get the other end to stay in the neg side clamp and if the light comes on when the key is off i have a draw and to start pulling fuses till it goes out and that should tell me what system is on a draw. Is this true. What is the best way to find this draw.??? does anyone know or think the cd changer should do anything when the key is off.