need help!

i'm using a DEH-P560MP in a 92 Mazda 323:

i recently got an rf modulator. i installed it successfully, finally found a good place for it, and, while trying to put the head unit back in, managed to blow a fuse. but the weird part is that i blew a fuse on the head unit itself, and not one in the car, which is what normally happens. some smoke came out too, which is weird. i replaced the fuse and tried the head unit out again, but now it turns on and off very quickly, beeping at me each time. i can't eject the cd either.

i took the unit apart and inspected it for burn marks, but i couldn't see anything. i'm assuming that it was the fuse that smoked and not the head unit. i think there were probably some bare wires, seeing as the wiring in the car is very poor and the tape was getting old. i inspected that today and they all seem to be covered up now. i have yet to try the head unit out now that i've checked it out, though.

pioneer troubleshooting is terrible or possibly nonexistant, so i found no help there.

thanks for any help you can give!

scott

you may have blown a car fuse too ......