s14 sr20 swapped hatch not starting

[lazysk8er01]

ok so im in the process of building my first s13 and i have had the engine wired and started. last weekend i went to start it and there was a spark under the dash as i cranked the ignition. the car started fine and ran good for a while, but when i turned it off, i had no power. not even ignition. what could be my problem? where do i start? i tried jumping the car but still no power so i know its a wiring issue.
any help would be appreciated, i am running out of weather to get this car on the road!
please be patient with me, i am a newbie to the import/nissan world.

[future]

The main fuse

[Srjustin]

Yup main fuse!

[lazysk8er01]

"main" fuse? would that be in the fuse box below the dash, or one of the relay boxes in the engine compartment? pictures would help. thanks guys!

[lazysk8er01]

also, the spark came from to the left of the steering wheel inside the dash where the two accessory buttons would be. it wasnt from the fuse panel.