I've got a second red LED by the existing one that tells me the info about the alarm (blink X amount of times if the car was bumped, attempted to be started, etc) The Blue LED scanner on the dash can be added without an alarm, just a power, neg and remote turn on switch. Trick would be to figure out how to power it while the car is off, rather than on. There are many versions and colors of these, check out your alarm store or ebay for some ideas.