electrical drain.... please help electrical guru's

[BowTie Eater 5 Liter]

well ive been having nothing but problems with my 91 lx 5.0. its killing batterys like no tomorrow. well, here is what i did, i disconnected the neg(-) cable from the battery, and tested the volts between the (-) terminal on the battery and the neg. battery cable. well its over 12v, so i decided to pull the fuses one at a time to see if i could pinpoint the drain. well after an hour of dicking around, i could not find it, i pulled all the fuses in the fuse box, disconnected the alt. cable that goes to the pos. side of the battery, and still, i have a 12+ volt draw. anyone have any clue where else to check?

this is the only thing i can see being my problem, ive tryd so many things with no luck, went through 2 batterys, car still wont start when warm(it cranks over so slow you would think the battery is dead).

any electrical experts have any ideas of where else to check???

much appreciated!!!