I just got the subplug 4 from norcal scion and I hooked it up and no sound came out of the speakers. I plugged the factory stuff back in and the sound worked perfect. I remembered reading you had to take some plastic off the subplug connector to get it to fit right (it was very hard to connect it at first). I took some plastic off and connected it again (it went in easily this time) and the sound still did not work and this time, the radio didn't even power up. I plugged in the factory connectors and nothing. No power to the radio, no sound, nothing. WTF happened????