Originally Posted by Drodriguez2009
Therefore it should still work like a stock setup you should not be able to tell a difference think about if you have a kick *** system and your stereo goes out you replace it and thats it maybe tune the radio but the speakers were never getting power for the stereo amp but from the after market amps
I spoke to a tech at crutchfield again and he said that the harness prevents the head unit from "seeing" the speakers. The amp is what is sending the signal to the speakers. So if the harness is wired correctly it should be OK. Also told me to check some settings on the head unit. I made a few changes and it does sound much better. I also noticed that the head unit does not have a High Pass Filter, that means that the tweeters may be getting some bass signal, which at moderately loud levels can cause distortion.
So my task for this week end is to take the head unit out, check the wiring on the harness and possibly install some bass blockers on the 4 tweeters.