Hello

Let me explain the situation. I recently bought a 04 Chrysler crossfire. First of it had no keys, so I could not start it at all. After looking around in the engine I had discovered that there was no ECU as well. So I proceeded to order on ebay and buy Key, Ignition, ECU and SKREEM online. It all came in one set. Once receiving all of these items I had changed the ignition, added the ECU and Changed the SKREEM. So I had attempted to turn on the car but nothing. The one I did notice is that the locking system was working. So the door, trunk, and everything else locked, The next day I went outside to check and then it stopped working. I got locked out of the car. I managed to get myself in with the help of a friend but the locking system stopped working in its entirety. I opened the trunk and thought that maybe it was the battery that was not dead. So I bought a new one and nothing. Then I turned the key and I heard the starter but then it stopped. So later I changed the spark plugs. After that I turned on the ignition and it ran for the first time and then died , second time turned the key started and then died. Third time nothing, just click, no starter nothing. This is where I currently stuck at. I have no idea where to go on from here. I’ve already solder the RCM, but nothing.im thinking that its either The three things which is either the key, ECU or Skreem.