Hey guys so im having a problem with something draining my battery. Battery keeps getting drained after sitting for about a week. When i install the battery theres big sparks when connecting the negative terminal. Positive first then install negative. So obviously theres a parasitic drain. Now when this happens it takes a 30a fuse under the hood with it. Some times i noticed that a second 30a fuse goes. Im putting up a pic that shows these fuses. When i change the fuse it seems to be fine unless i uninstall battery and reinstall. Now, car has an alarm and music system (subwoofer etc). How can i go about diagnosing this? Should i just find a way to uninstall alarm and see if its fixed and then system? What does the fuse have to do with this? What is causing them to blow? I know a little about electricity but not much. I can figure it out with some guidance. thx...

 

Try unplugging your a/c clutch and see of your fuse still blows.

 

Unplug A-39

 

but its blowing when connecting the battery...what am i testing by doing this?

 

if your AC clutch is shorted, disconnecting should prevent fuse from blowing.

 

I can't find any schematic of where those 30A fuses go. I'm just guessing it goes to something AC. The other thing I'd suggest disconnecting are the AC fans. Then reconnect one at a time to see which causes fuse to blow.

 

Well, once i connect the battery they blow but once i put in new fuses theyre fine. They blow when connecting the battery...

 

I'll need to look at an electrical diagram, but not many things take 30amp fuses. Look at cooling fans and the blower motor.