If my car sits a while, the battery will die. I've read as much as possible on this forum about the issue, but nobody seems to have quite the same problem as me. This is what I have done thus far:

Connecting my multimeter in series between the negative battery cable and the negative battery terminal yields a current reading of 2.6 Amps!!!

As stated in other threads, I've removed all of my fuses one at a time (and now I've left them all out for the time being)...still 2.6 Amp drain.

Next I disconnected all wires from the glow plug relay. Now the meter shows 1.3 Amps.

For reasons that I thought were logical after trying to read the schematic, I proceeded to disconnect the ignition switch, the headlight switch, and the starter lockout switch (on the side of the transmission). Remember that the glow plug relay is still also disconnected. All that work...and the meter still reads 1.3 A.

I then moved onto the small distribution box on the passenger fender where all the "big" wires are screwed into. I removed the pair of wires that run to the alternator. Now the meter reads 0.64 Amps.

Removing the other wires from this distribution box and entirely isolating all of the wires from each other yields a reading of .64 Amps. Essentially, there is now only a wire running from the positive battery terminal to the starter solenoid.

Going further with my multimeter (possibly incorrectly), I measured resistance between the big wire on the starter solenoid and the smaller wire (I believe the one that activates the starter). My meter reads 39 kilo-Ohms. I should've probably seen an infinite reading right?

So...my questions are now as follows:

1.) Should the starter and/or solenoid draw .64A by itself? Is 39 kilo-Ohms resistance reasonable between the two solenoid wires? Should this lead me to conclude that the starter/starter solenoid is bad?

2.) If so, how can I determine if I need a whole new starter or just a new solenoid?

3.) How can the remaining current drains be explained? 0.64Amps --> 1.3 Amps when the alternator gets hooked up --> 2.6 Amps when the glow plug relay gets hooked up. It is interesting that the current almost exactly doubles when each new component is hooked up. Is there a logical explanation for this, or just pure coincidence?

4.) Is there a common component that links these three major components that I'm overlooking? If one thing fried, would it fry the other two? Heaven forbid that I need a new starter, alternator, and GP relay!

I'm seriously at my wits end right now. Any help you guys can provide will be GREATLY appreciated. Thanks in advance!

Jeremy