What the heck did I do? Car wont wont crank!
 

So my car started over heating a bit at idle so I put the fan from my other RX7 into my running one. Got it all put back together and now when I try to start my car it just makes loud fast clicks? Help!

battery is dead

Gosh I hope not, it's literally 3 days old.

sounds like a dead battery. did you leave the key in the accessories position. do you have an aftermarket sterio that stayed on? as for the fans are the electric or the flex fan

ps i would hope its a dead battery instead of something worse.. dead batteriey are pretty easy to fix unless it is something else causing the battery to die prematurely

Well... I checked the battery cables, they were fine. Tried to crank it up again..... cranked right up.... WHY DOES MY CAR LIKE TO CONFUSE ME!!!

because like an idiot you left something disconnected.

Your car starter may be going as well.