wow thats a cool battery cutoff, my dad has a switch operated one in the garage I might install sometime. But I'd still like to solve the problem w/out having to install a cutoff.

 

you got a short someone hook up a test light to the - pole and clip it to the body. if it start pulling fuses tell it turns off then find out whats all on the fuse

 

I was having the same problems, replaced all like above, and found out it was my starter ground cable was doing the draining. Now my electrical friend told that some times your alternator will do the reverse and drain the battery while sitting.
Good luck.

 

Double check the starter wire and the voltage regulator. I have bought a few voltage regulators and they have been bad right out of the box. The other alternative is go to a 1-wire alternator, which is what I just did to bypass the voltage regulator all together.

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