Re: 89 Horizon camper van is "chirping"
Under what conditions do you hear it?
There are three types of safety devices commonly found in RVs - Smoke detector, Carbon Monoxide Detector and Propane Detector. Any of these which are battery powered (including from the 'house' battery) would be my first suspect. Also, my refridgerator 'chirps' when it senses a problem. After that, it depends on what is installed in there.