when i was getting an alarm for my car, i asked the guy if i can get a auto start for my sitck shift, he said i can get that, but he wont write me a receipt for it.
yes, you cant have your car in gear, even if you have e-brake engaged.
I work in commercial insurance claims and we had an electronics shop we insure that accidentally hit the auto start while a Dodge SRT4 was parked & in gear. (They did not install the auto start, they were working on the sound system.) It jumped & hit a solid support beam in the shop causing about 5k damage to the car. For that reason I am still a little nervous to install auto start on my 5spd. Even although I always leave it in neutral & e-braked when I park (unless I am parked on a hill of course).
You have to bypass the clutch. It's one of those risky things for a car, though. Some insurance companies won't insure the car if it has a starter on a manual transmission because its a safety issue.