redtop won't start need help

[l314ckhe4rt]

hi, okay got this swap in ran it for like 4 days runs great then one day came out and i turn the key and nothing..... it didn't even crank! i think i hear a small click. i have all power to the car the battery is from a 95 miata that i just bought 4 days old. oh i tried to jump start the car but when i let go of the pedal it didn't even studder no response. any help will be great guys