Savage_Rob wrote on 12/31/69 at 16:00:07:There's one on the bottom of my bike from the previous owner (or at least it was there about 3000 miles ago) and, from what I can tell, it does nothing. Of course, it's possible it does work and I just wouldn't know it until I removed it. Hmmmmm.
Only one way to find out. Pull it off, glue on Velcro fuzz and loop to bike and magnet. Leave off until you find a signal you cannot trigger. Back away, apply magnet, reapproach. Other than the one exit from the parking lot I have yet to find a trigger Thumper doesn't trip. But then, it is rare that a cage isn't on my tail.