I am going to be installing a remote start in my 2005 S40 and have a few questions regarding the transponder bypass. I want to use a 556u and hardwire it into the factory antenna ring instead of trying to find the best place to mount the ring that comes with the 556u. Is it possible to do this? If not, does anybody have any recommendations on how to bypass the transponder system? Also, does the keysense wire have to be powered for the car to remote start? And finally, if I have a key in the 556u and insert a key in the ignition cylinder, will the car shut down because it senses two keys? Any help is appreciated. Thank you.