Quick story, bought a new head unit and a wiring harness to allow me to plug the new unit into the existing Mach 460 hardware. When I pulled the 6CD changer out I found 3 plastic connectors... only one of these went into the new head unit. The one that does plug up is the larger of the 3. The wiring harness is fed by the new stereo's speaker wiring. Questions 1. What are these other two connectors that are now hanging loose behind the new stereo? 2. Is this setup making any use of the Mach 460 amplifiers or is it driving the speakers straight from my new stereo? If the amps are NOT being used... how can I use them to feed the speakers instead of the crappy amp built into the stereo? I know there is a search function.. I have been digging here and on google for hours and am going fuggin nuts! If anyone knows wtf is going on please chime in and help me out!