Emergency! Car Wont Start!

[stitch324door]

hey guys ive just recently completed an engine swap.. my r33 had a blown rb25de so i got one real cheap and swap it. now ive plug everything in right (i think) i went to to start he car (all the acc work ok) but the car wont start or crank... its like its not even plugged in.. whats causing this? and does anyone know how i can fix it???? please help

[stitch324door]

also its not the battery i swapped the battery from my mates skyline that battery definately does work

[nicr4wks]

Fuses? Double check starter connections.

[stitch324door]

thanks ive checked fuses but il double check starter connections. when it clicks as the ignition is on does that means its cranking?

[SECURITY]

cranking is when your motor is actually turning, pre start. you need to tell us if its turning or not. if its clicking and nothing sounds like its turning then your starter starter motor may not be engaging. did you put the ~3mm plate between the gearbox and the motor back on?