Help with this Keypad

I'm not sure if you'll have to bypass the unit or not. I have a clifford autoimmobilizer installed on my car with an ignition and starter cut and the car remote starts just fine. Try installing the keypad on the keyside of the ignition before the your alarm system. I dunno if that makes sense, but you want your keypad to be in between your prestige alarm and the key-side of the ignition. That way you should be able to remote start the car using the remote. However, you'll still need to enter your password before you can regain control of your car with the key. At least this is what has worked for me.

HI, I try Doing it that way but the car just doesnt start, And If I disconnected the keypad  The car star with the remote..

yeah...it sounds like your keypad is interrupting the signal from your alarm to your starter. Have you tried inputting your code first, then remotely starting the car? If the car is starting when you disconnect the keypad or after you input your code in first, most likely you'll have to move the wiring on the keypad closer to the keyside of the ignition. Keep in mind that your remote start is only sending a signal down to the starter and if there's nothing to block it, it'll work. Like I said, you'll still need to enter your code for your key to work though. Good luck

Sounds like your having the same problem I had when I installed a Blackjax unit with a remote starter. I had to use the (-) of the remote starter (which keeps it on for the entire duration of the vehicle start/run) to acctivate a relay to bypass the ignition and starter inputs of the blackjax unit.