I looked and could not find anything on the OS-1 device for keeping the Onstar system working when you replace the Head unit. The question is how/will the OS-1 device work if you replace the Headunit with one that does not have a built in Amp. The head unit is sending the sound through RCA plugs to the Amp and then from the Amp directly to the speakers. So my question is will this work for my system? I have many times thought of getting rid of the onstar, but do want to know if this is a viable option to having it? I do know that there is another bypass for onstar where you use a small radio shack speaker! I just do not want to go that way!
WVUSQUATCH
WVUSQUATCH