If you must have expensive stereo equipment in the car, invest in an alarm. Removeable components that can be stored out of sight in the trunk are best. Learn the location of the campus Emergency Phones and Call Boxes along your route. Most remote and many central areas of campus have emergency phones which can be located by the blue light that glows above them. Emergency phones are also located at the main entrance to each Residence Hall.
Most thefts are crimes of opportunity.
Reduce the opportunity and you have reduced the chances for theft. Whenever you leave your office, lab or residence hall room, even for just a few minutes, lock the door and accessible windows. Never prop open doors to buildings. Lock your bike with a good lock. Never loan your ID or keys to anyone.