Long story short, I am at a loss here. The car is in fantastic condition and I can't figure out why all of a sudden it keeps killing batteries! I bought a brand new one and the next day it had no charge. O'reilly's charged it and two days later, no charge again! I can boost it off and it runs like a dream. Any ideas? Could the main relay be bad? I also replaced the radio with a stock one from a 850 turbo. Thats the only things, I can think of

 

you have a draw somewhere, check your trunk light, you glove box light, anything that when it is open or on would pull power. Ie; Fan, fuel pump, window regulator. See if these things are still running when the car is off..

Tracing a draw is hard but you WILL find it eventually.

In the meantime I recommend getting a battery quick disconnect... This will save you when ever you stop.

 

Check the Sticky just above titled:
Helpful Information - "How To" DIY Repairs

There is a good battery drain discussion that should help. Most of are probably betting on the glove box courtesy light.

 

had alternator tested and only pulling 11 amps...Looks like this is my culprit . However the how to area will probably help greatly on replacing it lol

 

Are these battery disconnects standard stuff we can get at auto stores?

 

Yes they are, yes you can. AutoZone, OReilly, NAPA, Carquest ......

Amazon:
Amazon.com: Moroso 74103 Battery Terminal Disconnect Switch: Automotive