are you replacing your subwoofer? If you are, be sure you test the connection to the speaker to make sure you have hooked up the correct wires before you reinstall. I used the write-up I found on here, but the wiring configuration I used was totally different than the write-up. I've talked to a few people who said the same thing. It's not hard by any means, but it will save you some frustration if you get everything buttoned up and don't get any sound.