ok this is new to me and very weird!! so i went to future **** and wanted to get a deck install kit right so i askd a guy if they had the kit and ya just a piece of plastic $20 easy enough!! THEN he pulls out this thing that looks like a line output converter(it even had RCA jacks on it) with a price on it of $150 and goes on to say, that some of electronics in the car will not work with out this thing b/c of the alarm security system that is built in, i guess its a bypass of some sort?? has anyone else had to install this part on an aftermarket cd player in a 2006 grand prix with the monsoon stereo??