1994 infiniti J30 w/bose system

OK, first off I have a 1994 infiniti J30 that came with a bose system. Second I really don't know what I'm talking about so I'm sorry if you don't understand everything that I'm describing. I replaced the bose head unit with an aftermarket clarion unit. I also installed a xm radio(xm roady) with a fm transmitter. The previous owner had a cd changer installed also with an fm transmitter, and the installer tapped into the power and ground wires(there was a red wire and a black wire soldered to two of the factory wires). So I connected the power and ground wires of my fm transmitter and had no problems at all. Everything worked great. OK, now it's a year later and I want to switch to siruis sattelite radio. So I boought a siruis reciever (one similiar to the xm roady). This reciever came with an antenna and a cigarrette power cord. Now, instead of buying a fm transmitter that is compatible with my siruis radio, I decided to connect the reciver straight to the aux ports in the back of my HU. And for the power, I thought that I would cut off the cigarrette lighter plug in and hard wire it to the wires that my old fm transmitter was wired to. So I opened up the cigarrete lighter plug in and saw that one wire was soldered to the metal piece that is on the side of the cigarrette adapter and the other wire is soldered to the metal tip of the cigarrette adapter. So I deduced that the wire soldered to the tip was the power wire and the wire soldered to the sides was the ground wire. Now the stupid part. First I didn't disconnect the battery. Then I went ahead and connected cigarrette adapter that I modified to the power and ground wires that were tapped into buy a previous installer. After I did this nothing worked. My clarion head unit no longer powered up. Only the antenna seemed to get power. It would just go up and down continously. I then disconnected the modified cigarrete adapter and just connected the clarion hu. The same thing happened, no power just the antenna went up and down continously. I then hooked up the oem bose hu. It did not power up as well and the antenna didn't do anything. I them bought a cheap $25 hu from walmart just to make sure where the problem was, the hu or the car. When this was connected the hu did not recieve power however the antenna went up. When I pressed the power button on this head unit to turn it off the antenna went down. So what did I do do? I checked all the fuses and they were fine. How Much damage did I do? Any suggestions? Thanks for replys and once again sorry if this posted is hard to understand.