Eng Cont fuse draining battery?

[harleys]

First i'll start with some info on the car:
89 Nissan 240sx Coupe
Sr20det swap
and other goodies that don't really relate to this problem.

Problem:
For a while now, the battery is dead if the car sits for more than a couple of hours. So today I finally broke out the multimeter to see what was drawing all the power. I figure out that it is the FL25A Eng Cont fuse under the hood. It's drawing about 10a with nothing at all on inside the car. I believe this fuse is for the ecu, so i tried disconnecting the ecu and it still has a draw.

Can anyone tell me what else this fuse powers? What could be drawing the power? I'm so tired of having to keep a jump box with me to start my stupid car. I tried giving all info that is related to the problem, if you need to know something else, just tell me.

Thanks in advance for the help.