My 93 integra has the factory Karr alarm.... but the part of the clicker that attaches to the keyring wore off so now i have to carry it separate which is a total pain. The clicker still works in all other aspects. Is there a way to just replace the case?

 

Replacing the case is easy. Finding one would be much harder. Since its an older alarm, I would turn to ebay to see if you can find it.

 

Karr alarms are not factory they are dealer installed...you should post a pic of the remote someone might be able to identify the maker of it as most of these dealer installed alarms are rebadged name brand ones.