Hi all! Hoping someone can help... So I've got a Pioneer app radio with a JL audio amp and infinity sub in the boot. Just bought some JL component speakers, took the door cards off and the tweeters out. Replaced the speakers with the new speakers (used existing wiring). Replaced the tweeters with the new tweeters (used existing wiring but with a supplied tiny 'crossover' box in-between). I'm now getting some crackling when I crank it up and don't know why! Do I need to custom wire them into the pre-outs in the back of the head unit? Or will the stock wiring be ok? Or do I need to wire them to the sub!? Looks so difficult to put new wiring through Any help would be great, I'm a newbie when it comes to door speakers. Cheers!