Hi all. I'm kind of new to the forum, I have been checking it out for a while but never posted anything. Now I need help. I have a 2007 Harley Davidson supercrew. Just bought the factory sub for it but for some reason I'm not getting any sound out of it. I did check the sub to make sure is working and also checked that the wire harness was plugged in the back of the head unit. Now I'm at a lost, there is power at plug on the sub end, but still no sound. Any help will be greatly appreciated.