Those in the Audio industry might be able to help me with this one. The TT feature on many of todays alarms like Viper, does that just allow you to use a TT, or does it actually have a TT built in? And would an install shop be able to install a Remote start unit in a car witha manual transmission. I know a lot of places won't in case you leave it in gear, but with a TT, it will always be left in neutral. Thanks for the help!