i was installing my car deck, when my horn goes on and stays on so i take my key out, and it stops, now my clock is [freak]ed up it resets everytime i start my car and u cant even see the time, and the car deck had power before this now theres no power going to it

 

blown fuse maybe? or a short circuit somwhere

 

fuses are good

 

you shorted something. i would find the short before you drive it or you could end up catching the car on fire or even just burning up your cabin harness.