Hey whats up guys, I was planning on getting a Viper alarm, but I didnt want to end up using 2 remotes, and I wanted to keep the factory alarm because its much louder than the viper alarm. So I purchased the DEI 504D independent Shock Sensor which works pretty good, But I was just curious to know if theres anyone on here that installed a viper alarm system and hooked it up so that you dont have to use both remotes, without disconnecting the factory alarm.