[BMWnugen]

Can I add the alarm or does it have to come with the remote?

Also what engine do I have.

 

[Fluid]

You should have the alarm but you can add keyless entry. What car do you have? Fill out your profile.

 

[BMWnugen]

97' Jetta.

 

[chittychittybangbang]

Look through the FAQ section, there are writeups on how to add keyless entry. You have an alarm already, that's what the red led on the door is. Your engine is either a 1z or AHU, maintenance is pretty much the same but there are some minor mechanical differences.

 

[Vent5]

Go with the bulldog remote if you want a remote entry. There's a writeup on this site but the OEM module is a lot more expensive than the bulldog unit.

 

[wren53]

Go for the bulldog, many successfull installations and it's a lot cheaper, and it works just as well. The way it works is by tapping into the wire that says you turned the key in the lock. Pretty simple.