Hi, I bought 225 watt kicker door speakers from Best Buy. They looked to see if I had the right size and ohms, size is 6x8. I took the panel off to get at the speakers, and removed them. I took the negative and connected it to the negative on the speaker same with the positive. Connect the negative on the battery terminal, start the car and no sound comes out of the kickers. The tweeters and the rear deck are still working normally. So I unplugged the new ones and proceeded to plug in the old Infinity (which have a small capacitor on them like a little battery). Now the old Infinitys have no sound coming out of them. Best Buy want $100 to install the speakers, and I'm not trying to spend that. Thanks for any help.