ok i just finished wiring up a new headunit with a harness in my 99 GT and i put everything back in but when i try to turn it on it has no power. ive double checked all the connections and plugs. everything is wired correctly. so i took it back out and put the stock radio/cd player back in. it has no power either. so why is there no power? a blown fuse maybe?

 

It is most likely a fuse.

 

I have the same problem right now, I checked all my fuses???[:@]

 

it's probally a fuse check the fuse under the dash i dont know what year your car is but if it has a fuse box under the hood check there too.see if an thing else dont work like the dome light,cig lighter and check those fuses also you may have to run new wires