Does anybody know what it would take to add a sub to the existing, but upgraded head unit? Mine did not come with the sub from outer space and I got real stupid on Ebay a few nights ago and ordered a JL 12" 6v2 enclosed sub (Don't say it: already been there with the wife). I saw the wiring harness for the 'missing' sub, so basically I just want to use that as the control harness. The power lines for the new amp will obviously have to be dedicated, but I want to control the sub from the stock head unit. Anybody know if this is possible? I really want to keep the factory 6 CD head unit. I dig it. It's a looks thing. Thanks for any help!