[Evo Mike]

I've done MANY car stereo units in the past.. and trust me.. i've had just about every problem in the book.. doing amps for subs, amps for door speakers, head units, dvd players, ps2's, etc..

It sounds like you might have blown the fuse that controls the stereo.. either that, or you have somehow blown one of the resistors in the deck itself.. that is usually done by having the power wire from the car (if you have the wiring harness connected) to a bare speaker wire from the deck. You can check to see if that's the case by smelling the fan area on the back of your head unit. burnt smell = toasted deck.. Anyway if tha'ts the case, nothing can be done.. if not, check your fuse boxes and see if the fuses are all OK. If they are all OK, make sure you disconnect your battery before doing any work with the wiring harness.. you probably did that.. anyway, what i usually do is, connect the wiring harness to the head unit (when it's NOT connected to the car) with only the power (red), ground (black) and illumination (i think yellow). THEN click the connect your wiring harness to the car.. these pieces are plastic and snap together. Reconnect the negative battery cable, press the power button, and the deck should fire up! When i first started doing these installs, i remember thinking i installed the deck wrong like 4 times but i didn't hold the SRC button down to turn ON the deck.. what a stupid mistake.. but hey, thats what caused me 3 hours of work!

Anyway if the deck turns on, then shut off the car, unhook the wiring harness, and connect the speaker wire..

hope this helps and you dont have to go through the huge heart ache i went through on my bro's WRX =)